Konda Reddy

Struts2 File Upload

2015-03-20T06:56:00.001-07:00

package com.lkr.actions;

import java.io.File;
import java.util.ArrayList;

import javax.xml.parsers.ParserConfigurationException;

import org.apache.commons.io.FilenameUtils;
import org.xml.sax.SAXException;

import com.opensymphony.xwork2.ActionSupport;

public class UploadAction extends ActionSupport{

 
 
 private File upload;
 private String uploadContentType;
 private String uploadFileName;
 private int questionCount;
 
 
 
 public int getQuestionCount() {
  return questionCount;
 }
 public void setQuestionCount(int questionCount) {
  this.questionCount = questionCount;
 }
 public UploadAction(){
  
 }

 
 
 public String execute() {
  
  if (getUploadFileName() != null) {

   // filePath = servletRequest.getRealPath("/");
   String fileNameWithOutExt = FilenameUtils
     .removeExtension(this.uploadFileName);
   System.out.println("file to create..........." + fileNameWithOutExt);
   }
 
  return SUCCESS;
 
 }
 
 /**
  * @return the upload
  */
 public File getUpload() {
  return upload;
 }
 /**
  * @param upload the upload to set
  */
 public void setUpload(File upload) {
  this.upload = upload;
 }
 /**
  * @return the uploadContentType
  */
 public String getUploadContentType() {
  return uploadContentType;
 }
 /**
  * @param uploadContentType the uploadContentType to set
  */
 public void setUploadContentType(String uploadContentType) {
  this.uploadContentType = uploadContentType;
 }
 /**
  * @return the uploadFileName
  */
 public String getUploadFileName() {
  return uploadFileName;
 }
 /**
  * @param uploadFileName the uploadFileName to set
  */
 public void setUploadFileName(String uploadFileName) {
  this.uploadFileName = uploadFileName;
 }
 
 
 
 

}

upload.jsp

in the upload.jsp the form method should be post and enctype="multipart/form-data"

<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<style>
input[type="radio"] {
 margin-top: -1px;
 vertical-align: middle;
}
</style>
</head>

<body>
 <h1>Struts 2 radio button example</h1>

 <s:form action="resultAction" namespace="/" enctype="multipart/form-data" theme="simple" method="POST">

  <h4>
   <s:file name="upload" id="upload1">
   </s:file>
   
  </h4>

  <s:submit value="submit" name="submit" />

 </s:form>

</body>
</html>

struts.xml exam/result.jsp

Hibernate Pojo Annotations

2014-12-05T17:51:00.000-08:00

package com.petrol.to;

// Generated Mar 8, 2014 3:29:01 AM by Hibernate Tools 3.4.0.CR1

import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import static javax.persistence.GenerationType.IDENTITY;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;

/**
 * Bills generated by hbm2java
 */
@Entity
@Table(name = "bills", catalog = "pt")
public class Bills implements java.io.Serializable {

 private Integer id;
 private Customers customers;
 private int billNo;
 private Integer vehicleId;
 private Date billDate;
 private int type;
 private Date createdAt;
 private Date updatedAt;
 private Set<BillItems> billItemses = new HashSet<BillItems>(0);

 public Bills() {
 }

 public Bills(int billNo, int type) {
  this.billNo = billNo;
  this.type = type;
 }

 public Bills(Customers customers, int billNo, Integer vehicleId,
   Date billDate, int type, Date createdAt, Date updatedAt,
   Set<BillItems> billItemses) {
  this.customers = customers;
  this.billNo = billNo;
  this.vehicleId = vehicleId;
  this.billDate = billDate;
  this.type = type;
  this.createdAt = createdAt;
  this.updatedAt = updatedAt;
  this.billItemses = billItemses;
 }

 @Id
 @GeneratedValue(strategy = IDENTITY)
 @Column(name = "id", unique = true, nullable = false)
 public Integer getId() {
  return this.id;
 }

 public void setId(Integer id) {
  this.id = id;
 }

 @ManyToOne(fetch = FetchType.EAGER)
 @JoinColumn(name = "customer_id")
 public Customers getCustomers() {
  return this.customers;
 }

 public void setCustomers(Customers customers) {
  this.customers = customers;
 }

 @Column(name = "bill_no", nullable = false)
 public int getBillNo() {
  return this.billNo;
 }

 public void setBillNo(int billNo) {
  this.billNo = billNo;
 }

 @Column(name = "vehicle_id")
 public Integer getVehicleId() {
  return this.vehicleId;
 }

 public void setVehicleId(Integer vehicleId) {
  this.vehicleId = vehicleId;
 }

 @Temporal(TemporalType.DATE)
 @Column(name = "bill_date", length = 10)
 public Date getBillDate() {
  return this.billDate;
 }

 public void setBillDate(Date billDate) {
  this.billDate = billDate;
 }

 @Column(name = "type", nullable = false)
 public int getType() {
  return this.type;
 }

 public void setType(int type) {
  this.type = type;
 }

 @Temporal(TemporalType.TIMESTAMP)
 @Column(name = "created_at", length = 19)
 public Date getCreatedAt() {
  return this.createdAt;
 }

 public void setCreatedAt(Date createdAt) {
  this.createdAt = createdAt;
 }

 @Temporal(TemporalType.TIMESTAMP)
 @Column(name = "updated_at", length = 19)
 public Date getUpdatedAt() {
  return this.updatedAt;
 }

 public void setUpdatedAt(Date updatedAt) {
  this.updatedAt = updatedAt;
 }

 @OneToMany(fetch = FetchType.EAGER, mappedBy = "bills")
 public Set<BillItems> getBillItemses() {
  return this.billItemses;
 }

 public void setBillItemses(Set<BillItems> billItemses) {
  this.billItemses = billItemses;
 }

}

hibernate.cfg.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.bytecode.use_reflection_optimizer">false</property>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/pt</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.search.autoregister_listeners">false</property>
        <mapping class="com.petrol.to.Customers" />
        <mapping class="com.petrol.to.Invoices" />
        <mapping class="com.petrol.to.Authorizations" />
        <mapping class="com.petrol.to.Sessions" />
        <mapping class="com.petrol.to.PetrolUser" />
        <mapping class="com.petrol.to.Stocks" />
        <mapping class="com.petrol.to.Actions" />
        <mapping class="com.petrol.to.SchemaMigrations" />
        <mapping class="com.petrol.to.Vehicles" />
        <mapping class="com.petrol.to.UserType" />
        <mapping class="com.petrol.to.Items" />
        <mapping class="com.petrol.to.BillItems" />
        <mapping class="com.petrol.to.Bills" />
        <mapping class="com.petrol.to.Recipts" />
    </session-factory>
</hibernate-configuration>

main.java

package com.petrol.admin.action;

import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;

import com.petrol.dao.AuthorizationsHome;
import com.petrol.to.Authorizations;

/**
 * Handle authorization operation.
 * 
 * @author Asman.
 */
public class AuthorizationsLoader {

 /**
  * Getting authorizations.
  * 
  * @return authorizations
  */
 public List<Authorizations> loadAuthorizations() {
  List<Authorizations> authorizations = null;
  Session session = null;
  try {
   SessionFactory sessionFactory = new AnnotationConfiguration()
     .configure("/hibernate.cfg.xml").buildSessionFactory();
   session = sessionFactory.openSession();
   AuthorizationsHome authoDao = new AuthorizationsHome();
   authorizations = authoDao.getAllAuthorizations(session);
   session.close();

  } catch (HibernateException he) {
   // he.printStackTrace();
  }
  return authorizations;
 }

 public static void main(String s[]) {

 }
}

Struts2 Restful webservices

2014-12-05T17:43:00.001-08:00

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

  <constant name="struts.devMode" value="true" />
  <constant name="struts.convention.action.suffix" value="Controller"/>
  <constant name="struts.convention.action.mapAllMatches" value="true"/>
  <constant name="struts.convention.default.parent.package" value="rest-default"/>
  <constant name="struts.convention.package.locators" value="example"/>

  <constant name="struts.convention.default.parent.package" value="rest-default"/>  

</struts>

OrdersController.java

package org.lkr.struts2.rest.example;

import java.util.Collection;

import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.convention.annotation.Results;
import org.apache.struts2.rest.DefaultHttpHeaders;
import org.apache.struts2.rest.HttpHeaders;
import org.lkr.struts2.rest.service.OrdersService;
import org.lkr.struts2.rest.to.Order;

import com.opensymphony.xwork2.ModelDriven;

@Results({ @Result(name = "success", type = "redirectAction", params = {
  "actionName", "orders" }) })
public class OrdersController implements ModelDriven<Object> {

 /**
  * 
  */
 private static final long serialVersionUID = 3241256322152936000L;
 private Order model = new Order();
 private String id;
 private Collection<Order> list;
 private OrdersService ordersService = new OrdersService();

 // GET /orders/1
 public HttpHeaders show() {
  return new DefaultHttpHeaders("show");
 }

 // GET /orders
 public HttpHeaders index() {
  list = ordersService.getAll();
  return new DefaultHttpHeaders("index").disableCaching();
 }

 // GET /orders/1/edit
 public String edit() {
  return "edit";
 }

 // GET /orders/new
 public String editNew() {
  model = new Order();
  return "editNew";
 }

 // GET /orders/1/deleteConfirm
 public String deleteConfirm() {
  return "deleteConfirm";
 }

 // DELETE /orders/1
 public String destroy() {
  ordersService.remove(id);
  //addActionMessage("Order removed successfully");
  return "success";
 }

 // POST /orders
 public HttpHeaders create() {
  ordersService.save(model);
  //addActionMessage("New order created successfully");
  return new DefaultHttpHeaders("success").setLocationId(model.getId());
 }

 // PUT /orders/1
 public String update() {
  ordersService.save(model);
  //addActionMessage("Order updated successfully");
  return "success";
 }

 public void validate() {
  if (model.getClientName() == null
    || model.getClientName().length() == 0) {
   //addFieldError("clientName", "The client name is empty");
  }
 }

 public void setId(String id) {
  if (id != null) {
   this.model = ordersService.get(id);
  }
  this.id = id;
 }

 public Object getModel() {
  return (list != null ? list : model);
 }

}

orders-index.jsp

<%@taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
 <title>Orders</title>
</head>
<body>
    <s:actionmessage />
    <table>
        <tr>
            <th>ID</th>
            <th>Client</th>
            <th>Amount</th>
            <th>Actions</th>
        </tr>
        <s:iterator value="model">
        <tr>
            <td>${id}</td>
            <td>${clientName}</td>
            <td>${amount}</td>
            <td><a href="orders/${id}">View</a> |
                <a href="orders/${id}/edit">Edit</a> |
                <a href="orders/${id}/deleteConfirm">Delete</a></td>
        </tr>
        </s:iterator>
    </table>     
    <a href="orders/new">Create a new order</a>
</body>
</html>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 <filter>
  <filter-name>struts2</filter-name>
  <filter-class>
   org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
  </filter-class>
 </filter>
 <filter-mapping>
  <filter-name>struts2</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>
 <welcome-file-list>
  <!-- <welcome-file>index.jsp</welcome-file> -->
  <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>
</web-app>

Spring & Struts2 and Hibernate Integration

2014-11-25T18:55:00.000-08:00

Application Context.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>


<bean id="ieDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver" />
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/pt" />

<property name="properties">
<props>
<prop key="c3p0.acquire_increment">10</prop>
<prop key="c3p0.idle_test_period">100</prop>
<prop key="c3p0.max_size">500</prop>
<prop key="c3p0.max_statements">0</prop>
<prop key="c3p0.min_size">10</prop>
<prop key="c3p0.timeout">120</prop>
<prop key="user">root</prop>
<prop key="password"></prop>
</props>
</property>
</bean>




<bean id="ieSessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">

<property name="dataSource" ref="ieDataSource" />
<property name="annotatedClasses">

<list>
<value>com.petrol.to.BillItems</value>
<value>com.petrol.to.Items</value>
<value>com.petrol.to.Bills</value>
<value>com.petrol.to.Customers</value>
<value>com.petrol.to.Recipts</value>
<value>com.petrol.to.SchemaMigrations</value>
<value>com.petrol.to.Sessions</value>
<value>com.petrol.to.Stocks</value>
<value>com.petrol.to.Vehicles</value>
<value>com.petrol.to.PetrolUser</value>
<value>com.petrol.to.UserType</value>
<value>com.petrol.to.Invoices</value>
<value>com.petrol.to.Actions</value>
<value>com.petrol.to.Authorizations</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect"> org.hibernate.dialect.MySQLDialect</prop>

</props>
</property>

</bean>






<bean id="loginAction" class="com.petrol.admin.action.LoginAction"
singleton="false">
<property name="petrolUserService" ref="petrolUserService"></property>
</bean>

<bean id="userRegisterAction" class="com.petrol.admin.action.PetrolUserRegisterAction"
singleton="false">
<property name="petrolUserService" ref="petrolUserService"></property>
</bean>









<bean id="getAllCustomersAction" class="com.petrol.admin.action.GetAllCustomersAction"
singleton="false">
<property name="getAllCustomersService" ref="getAllCustomersService"></property>
</bean>

<bean id="viewCustomerAction" class="com.petrol.admin.action.ViewCustomerAction"
singleton="false">
<property name="getAllCustomersService" ref="getAllCustomersService"></property>
</bean>

<bean id="registerAction" class="com.petrol.admin.action.UserRegisterAction"
singleton="false">
<property name="petrolUserService" ref="petrolUserService"></property>
</bean>





<bean id="billItemsAction" class="com.petrol.admin.action.BillItemsAction"
singleton="false">
<property name="petrolBillItemsService" ref="petrolBillItemsService"></property>
<property name="petrolItemsService" ref="petrolItemsService"></property>
<property name="petrolBillsService" ref="petrolBillsService"></property>
</bean>

<bean id="pdfAction" class="com.petrol.commons.GeneratingPdfAction"
singleton="false">
<property name="petrolBillItemsService" ref="petrolBillItemsService"></property>
<property name="getAllInvoicesService" ref="getAllInvoicesService"></property>
<property name="petrolStocksService" ref="petrolStocksService"></property>
</bean>





<bean id="getItemsAction" class="com.petrol.admin.action.GetItemsAction"
singleton="false">
<property name="petrolItemsService" ref="petrolItemsService"></property>
</bean>

<bean id="itemsAction" class="com.petrol.admin.action.ItemsAction"
singleton="false">
<property name="petrolItemsService" ref="petrolItemsService"></property>
</bean>

<bean id="stocksAction" class="com.petrol.admin.action.StocksAction"
singleton="false">
<property name="petrolStocksService" ref="petrolStocksService"></property>
</bean>

<bean id="getAllStocksAction" class="com.petrol.admin.action.GetAllStocksAction"
singleton="false">
<property name="getAllStocksService" ref="getAllStocksService"></property>
</bean>

<bean id="viewStockAction" class="com.petrol.admin.action.ViewStockAction"
singleton="false">
<property name="getAllStocksService" ref="getAllStocksService"></property>
</bean>




<bean id="itemsPriceAction" class="com.petrol.admin.action.ItemsPriceAction"
singleton="false">
<property name="petrolItemsService" ref="petrolItemsService"></property>
</bean>





<bean id="billsAction" class="com.petrol.admin.action.BillsAction"
singleton="false">
<property name="petrolBillsService" ref="petrolBillsService"></property>
</bean>

<bean id="getCustomersAction" class="com.petrol.admin.action.GetCustomersAction"
singleton="false">
<property name="petrolBillsService" ref="petrolBillsService"></property>
</bean>

<bean id="getBillNumberAction" class="com.petrol.admin.action.GetBillNumberAction"
singleton="false">
<property name="petrolBillsService" ref="petrolBillsService"></property>
</bean>

<bean id="getBillItemsAction" class="com.petrol.admin.action.GetBillItemsAction"
singleton="false">
<property name="getBillItemsService" ref="getBillItemsService"></property>
</bean>

<bean id="priceAction" class="com.petrol.admin.action.PriceAction"
singleton="false">
<property name="petrolItemsService" ref="petrolItemsService"></property>
</bean>

<bean id="productSubmitAction" class="com.petrol.admin.action.ProductSubmitAction"
singleton="false">
<property name="productSubmitService" ref="productSubmitService"></property>
</bean>





<bean id="invoiceAction" class="com.petrol.admin.action.InvoiceAction"
singleton="false">
<property name="getAllInvoicesService" ref="getAllInvoicesService"></property>
</bean>


























<bean id="petrolUserService" class="com.petrol.service.PetrolUserService"
singleton="false">
<property name="sessionFactory" ref="ieSessionFactory"></property>
<property name="customersDao" ref="customersDao"></property>
<property name="userTypeDao" ref="userTypeDao"></property>
<property name="userDao" ref="userDao"></property>
</bean>

<bean id="getAllCustomersService" class="com.petrol.service.GetAllCustomersService"
singleton="false">
<property name="sessionFactory" ref="ieSessionFactory"></property>
<property name="customersDao" ref="customersDao"></property>
</bean>

<bean id="petrolBillItemsService" class="com.petrol.service.PetrolBillItemsService"
singleton="false">
<property name="sessionFactory" ref="ieSessionFactory"></property>
<property name="billItemsDao" ref="billItemsDao"></property>
</bean>

<bean id="petrolItemsService" class="com.petrol.service.PetrolItemsService"
singleton="false">
<property name="sessionFactory" ref="ieSessionFactory"></property>
<property name="itemsDao" ref="itemsDao"></property>
</bean>

<bean id="petrolBillsService" class="com.petrol.service.PetrolBillsService"
singleton="false">
<property name="sessionFactory" ref="ieSessionFactory"></property>
<property name="billsDao" ref="billsDao"></property>
<property name="billItemsDao" ref="billItemsDao"></property>
<property name="stocksDao" ref="stocksDao"></property>
<property name="itemsDao" ref="itemsDao"></property>
<property name="customersDao" ref="customersDao"></property>
</bean>

<bean id="getAllInvoicesService" class="com.petrol.service.GetAllInvoicesService"
singleton="false">
<property name="sessionFactory" ref="ieSessionFactory"></property>
<property name="invoicesDao" ref="invoicesDao"></property>
</bean>

<bean id="petrolStocksService" class="com.petrol.service.PetrolStocksService"
singleton="false">
<property name="sessionFactory" ref="ieSessionFactory"></property>
<property name="stocksDao" ref="stocksDao"></property>
<property name="itemsDao" ref="itemsDao"></property>
</bean>

<bean id="getAllStocksService" class="com.petrol.service.GetAllStocksService"
singleton="false">
<property name="sessionFactory" ref="ieSessionFactory"></property>
<property name="stocksDao" ref="stocksDao"></property>
<property name="itemsDao" ref="itemsDao"></property>
</bean>

<bean id="productSubmitService" class="com.petrol.service.ProductSubmitService"
singleton="false">
</bean>

<bean id="getBillItemsService" class="com.petrol.service.GetBillItemsService"
singleton="false">
<property name="sessionFactory" ref="ieSessionFactory"></property>
<property name="billItemsDao" ref="billItemsDao"></property>
</bean>








<bean id="billItemsDao" class="com.petrol.dao.BillItemsDao" />
<bean id="itemsDao" class="com.petrol.dao.ItemsDao" />
<bean id="customersDao" class="com.petrol.dao.CustomersDao"></bean>
<bean id="billsDao" class="com.petrol.dao.BillsDao"></bean>
<bean id="stocksDao" class="com.petrol.dao.StocksDao"></bean>
<bean id="invoicesDao" class="com.petrol.dao.InvoicesDao"></bean>
<bean id="userTypeDao" class="com.petrol.dao.UserTypeDao"></bean>
<bean id="userDao" class="com.petrol.dao.UserDao"></bean>


</beans>

*********************************************************************

********************************************************************

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

id="WebApp_ID" version="2.5">

<display-name>Idea Exchange</display-name>

<context-param>

<param-name>

org.apache.tiles.impl.BasicTilesContainer.DEFINITIONS_CONFIG</param-name>

<param-value>/WEB-INF/petrolProjectTiles-defs.xml</param-value>

</context-param>

<filter-name>pp</filter-name>

<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>

</filter>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<listener-class>org.apache.struts2.tiles.StrutsTilesListener</listener-class>

</listener>

<filter-mapping>

<filter-name>pp</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<servlet-name>Captcha</servlet-name>

<servlet-class>com.petrol.commons.PetrolCaptcha</servlet-class>

<init-param>

<description>passing height</description>

<param-name>height</param-name>

<param-value>30</param-value>

</init-param>

<init-param>

<description>passing height</description>

<param-name>width</param-name>

<param-value>120</param-value>

</init-param>

</servlet>

<servlet-mapping>

<servlet-name>Captcha</servlet-name>

<url-pattern>/Captcha.jpeg</url-pattern>

</servlet-mapping>

<session-config>

<session-timeout>30</session-timeout>

</session-config>

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

</web-app>

**************************************************************

*************************************************************

tiles.xml

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE tiles-definitions PUBLIC

"-//Apache Software Foundation//DTD Tiles Configuration 2.0//EN"

"http://tiles.apache.org/dtds/tiles-config_2_0.dtd">

<tiles-definitions>

<put-attribute name="header" value="/petrolheader.jsp" />

<put-attribute name="logout" value="/logoutmenu.jsp" />

<put-attribute name="menu" value="/petrolmenu.jsp"/>

<put-attribute name="body" value="/body.jsp" />

<put-attribute name="footer" value="/petrolfooter.jsp" />

</definition>

<put-attribute name="body" value="/Welcome.jsp" />

</definition>

<put-attribute name="body" value="/register.jsp" />

<put-attribute name="menu" value="/body.jsp" />

</definition>

<put-attribute name="body" value="/bills.jsp" />

</definition>

<put-attribute name="body" value="/stocks.jsp" />

</definition>

<put-attribute name="body" value="/items.jsp" />

</definition>

<put-attribute name="body" value="/viewbillitems.jsp" />

</definition>

<put-attribute name="body" value="/success.jsp" />

</definition>

<put-attribute name="body" value="/failure.jsp" />

</definition>

<put-attribute name="body" value="/login.jsp" />

</definition>

<put-attribute name="body" value="/billitems.jsp" />

</definition>

<put-attribute name="body" value="/customers.jsp" />

</definition>

<put-attribute name="body" value="/viewcustomer.jsp" />

</definition>

<put-attribute name="body" value="/createcustomer.jsp" />

</definition>

<put-attribute name="body" value="/customertransactions.jsp" />

</definition>

<put-attribute name="body" value="/viewbillitems.jsp" />

</definition>

<put-attribute name="body" value="/Copy of billitems.jsp" />

</definition>

<put-attribute name="body" value="/stocks.jsp" />

</definition>

<put-attribute name="body" value="/addstocks.jsp" />

</definition>

<put-attribute name="body" value="/addstocks.jsp" />

</definition>

<put-attribute name="body" value="/viewstock.jsp" />

</definition>

<put-attribute name="body" value="/createinvoice.jsp" />

</definition>

<put-attribute name="body" value="/invoicetransactions.jsp" />

</definition>

<put-attribute name="body" value="/viewiteminvoices.jsp" />

</definition>

<put-attribute name="body" value="/stocktransactions.jsp" />

</definition>

<put-attribute name="body" value="/viewstocktransactions.jsp" />

</definition>

<put-attribute name="body" value="/allitems.jsp" />

</definition>

<put-attribute name="header" value="/petrolheader.jsp" />

<put-attribute name="body" value="/userregister.jsp"/>

<put-attribute name="menu" value="/body.jsp"/>

<put-attribute name="logout" value="/body.jsp"/>

<put-attribute name="footer" value="/petrolfooter.jsp" />

</definition>

</tiles-definitions>

*****************************************************

struts.xml

<!DOCTYPE struts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd">

<package name="default " namespace="/"

extends="struts-default,json-default">

<result-types>

<result-type name="tiles"

class="org.apache.struts2.views.tiles.TilesResult" />

<result-type name="jasper" class="org.apache.struts2.views.jasperreports.JasperReportsResult"/>

</result-types>

<interceptor name="loginInterceptor"

class="com.petrol.admin.action.PetrolLoginInterceptor">

</interceptor>

<interceptor-stack name="petrolInterceptorsStack">

<interceptor-ref name="alias" />

<interceptor-ref name="params" />

<interceptor-ref name="servletConfig" />

<interceptor-ref name="exception" />

<interceptor-ref name="prepare" />

<interceptor-ref name="i18n" />

<interceptor-ref name="chain" />

<interceptor-ref name="modelDriven" />

<interceptor-ref name="fileUpload" />

<interceptor-ref name="checkbox" />

<interceptor-ref name="staticParams" />

<interceptor-ref name="params" />

<interceptor-ref name="conversionError" />

<interceptor-ref name="validation">

<param name="excludeMethods">input,back,cancel</param>

</interceptor-ref>

<!-- <interceptor-ref name="workflow">

<param name="excludeMethods">input,back,cancel,browse</param>

</interceptor-ref> -->

<interceptor-ref name="loginInterceptor" />

</interceptor-stack>

</interceptors>

<default-interceptor-ref name="petrolInterceptorsStack"></default-interceptor-ref>

<global-results>

<result name="redirecthome" type="redirect">index.jsp</result>

</global-results>

<result name="success" type="tiles">preregister</result>

<result name="input">/login.jsp</result>

</action>

<param name="actionName">getAllCustomers.action</param>

</result>

<result name="error" type="tiles">preregister</result>

<param name="actionName">getAllCustomers.action</param>

</result>

</action>

<param name="actionName">getAllCustomers.action</param>

</result>

<param name="actionName">getAllCustomers.action</param>

</result>

<result name="changepassword" type="tiles">changepassword</result>

<result name="error" type="tiles">login</result>

</action>

<result name="success" type="tiles">customers</result>

</action>

<result name="success" type="tiles">precustomer</result>

</action>

getAllCustomers.action

</param>

</result>

<result name="input" type="tiles">failure</result>

</action>

<result name="success" type="tiles">viewcustomer</result>

</action>

<result name="success" type="tiles">precustomer</result>

</action>

getAllCustomers.action

</param>

</result>

</action>

getAllCustomers.action

</param>

</result>

</action>

<result name="success" type="tiles">precustomertransactions</result>

</action>

<action name="customerBillSearch" method="getBillByCustomer"

class="billItemsAction">

<result name="success" type="tiles">viewsales</result>

</action>

<param name="inputName">fileStream</param>

<param name="contentType">application/pdf</param>

<param name="contentDisposition">filename="test.pdf"</param>

</result>

</action>

<result name="success" type="tiles">getallitems</result>

</action>

<result name="success" type="tiles">items</result>

<result name="input" type="tiles">failure</result>

</action>

getAllItems.action

</param>

</result>

<result name="input" type="tiles">items</result>

<result name="error" type="tiles">items</result>

</action>

<result name="success" type="tiles">addstocks</result>

<result name="input" type="tiles">failure</result>

</action>

getAllStocks

</param>

</result>

<result name="input" type="tiles">failure</result>

</action>

<result name="success" type="tiles">getallstocks</result>

</action>

<result name="success" type="tiles">viewstock</result>

</action>

<result name="success" type="tiles">items</result>

</action>

getAllItems.action

</param>

</result>

</action>

getAllItems.action

</param>

</result>

</action>

<result name="success" type="tiles">viewstock</result>

</action>

<result name="success" type="tiles">prestocktransaction</result>

<result name="input" type="tiles">failure</result>

</action>

<param name="excludeProperties">.*application,validate </param>

</result>

</action>

<result name="success" type="tiles">viewstocktransactions</result>

</action>

<param name="inputName">fileStream</param>

<param name="contentType">application/pdf</param>

<param name="contentDisposition">filename="test.pdf"</param>

</result>

</action>

<result name="success" type="tiles">prebillcreation</result>

</action>

<param name="excludeProperties">.*application,validate </param>

</result>

</action>

<param name="excludeProperties">.*application,validate </param>

</result>

</action>

getBillItems

</param>

</result>

<result name="input" type="tiles">failure</result>

<result name="error" type="tiles">prebillcreation</result>

</action>

<result name="success" type="tiles">getBillItems</result>

</action>

<param name="excludeProperties">.*application,validate </param>

</result>

</action>

<param name="excludeProperties">.*application,validate </param>

</result>

</action>

<param name="excludeProperties">.*application,validate </param>

</result>

</action>

<param name="excludeProperties">.*application,validate </param>

</result>

</action>

<result name="success" type="tiles">createinvoice</result>

</action>

getAllCustomers.action

</param>

</result>

<result name="input" type="tiles">failure</result>

</action>

<result name="success" type="tiles">preinvoicetransaction</result>

<result name="input" type="tiles">failure</result>

</action>

<action name="itemInvoiceSearch" method="getInvoicesByItem"

class="invoiceAction">

<result name="success" type="tiles">viewinvoices</result>

</action>

<param name="inputName">fileStream</param>

<param name="contentType">application/pdf</param>

<param name="contentDisposition">filename="test.pdf"</param>

</result>

</action>

<result name="success">/index.jsp</result>

</action>

</package>

</struts>

Apache is not running from XAMPP Control Panel

2013-12-07T06:24:00.001-08:00

How to Change the Apache Port in XAMPP

Sending Android Push Notification in My Phonegap Application

2013-04-28T23:44:00.002-07:00

First of all you need to create you application project in Google Api Console,

i will show some steps here how to create the application in Google Api Console,

Registering with Google Cloud Messaging

1. Goto Google APIs Console page and create a new project. (If you haven’t created already otherwise it will take you to dashboard)

2. After creating project you can see the project id in the url. Note down the project id which will be used as SENDER ID in android project. (Example: in #project:460866929976 after semicolon 460866929976 is the sender id)

https://code.google.com/apis/console/#project:460866929976

3. After that click on Services on the left panel and turn on Google Cloud Messaging for Android.

4. Once you are done, click on API Access and note down the API Key. This API key will be used when sending requests to GCM server.

now i want to develop one samplepushnotification application

my application structure is like this

GCMIntentService.java

/*
 * Copyright 2012 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.example.sampleandroidpushnotification;


import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;


import android.app.IntentService;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.RemoteViews;

import com.google.android.gcm.GCMBaseIntentService;

/**
 * {@link IntentService} responsible for handling GCM messages.
 */
public class GCMIntentService extends GCMBaseIntentService {

 @SuppressWarnings("hiding")
 private static final String TAG = "GCMIntentService";
 
  public static String EXTRA_MESSAGE ="sendingMessageFromGCMIntent";
  public static String TestFlag ="fromGCMIntenet";
 
 public static String globalmessage;
 static int i=0;
 static Integer newi;

 public static String getGlobalmessage() {
  return globalmessage;
 }

 public static void setGlobalmessage(String globalmessage) {
  GCMIntentService.globalmessage = globalmessage;
 }

 public GCMIntentService() {
  super("xxxxxxxx");
 }

 /**
  * Issues a notification to inform the user that server has sent a message.
  */
 
 
 
 private static void generateNotification(Context context, String message) {
  int NOTIFICATION_ID = 1;
  long when = System.currentTimeMillis();
  NotificationManager notificationManager = (NotificationManager) context
    .getSystemService(Context.NOTIFICATION_SERVICE);
  Notification notification = new Notification(R.drawable.ic_launcher,message, when);
  
  Log.v("gcm service",message);
  
  String title = context.getString(R.string.app_name);
   i++;
 
   Intent notificationIntent = new Intent(context,TestActivity.class);
   
   notificationIntent.putExtra(EXTRA_MESSAGE, message);
   
   Log.v("msg","coming"+message);
   
   TestFlag = "afterNoti";
   
   // set intent so it does not start a new activity
   notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
     | Intent.FLAG_ACTIVITY_SINGLE_TOP);
   PendingIntent intent = PendingIntent.getActivity(context, 0,
     notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
   notification.setLatestEventInfo(context, title, message, intent);
   /*notification.flags |= Notification.FLAG_AUTO_CANCEL;
   notification.defaults |= Notification.DEFAULT_SOUND;*/
   notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
   
   RemoteViews contentView = new RemoteViews(context.getPackageName(), R.layout.custom_notification_layout);
   contentView.setImageViewResource(R.id.image, R.drawable.ic_launcher);
   contentView.setTextViewText(R.id.notification_title, "Sample PushNotification");
         contentView.setTextViewText(R.id.text, message);
         notification.contentView = contentView;
        // notification.flags |= Notification.FLAG_NO_CLEAR; //Do not clear the notification
         notification.defaults |= Notification.DEFAULT_LIGHTS; // LED
         notification.defaults |= Notification.DEFAULT_VIBRATE; //Vibration
         notification.defaults |= Notification.DEFAULT_SOUND; // Sound

   notificationManager.notify(NOTIFICATION_ID, notification);
 }

 @Override
 protected void onError(Context arg0, String arg1) {
  // TODO Auto-generated method stub
 }

 @Override
 protected void onMessage(Context arg0, Intent arg1) {
  Log.d("GCM", "RECIEVED A MESSAGE");
  // Get the data from intent and send to notificaion bar
  generateNotification(arg0, arg1.getStringExtra("message"));
 }

 @Override
 protected void onRegistered(Context arg0, String reggId) {
  // TODO Auto-generated method stub
   JSONObject json;
        JSONArray answerArray = new JSONArray();
    JSONObject answerObject = new JSONObject();
    try {
     answerObject.put("regId", reggId);
    } catch (JSONException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
    answerArray.put(answerObject);
 }

 @Override
 protected void onUnregistered(Context arg0, String arg1) {
  // TODO Auto-generated method stub

 }
 

 

}

in the above java file observe

public GCMIntentService() {
  super("xxxxxxxx");
 }

instead of XXXXXXX you just put your sender ID

LKRActivity.java

package com.example.sampleandroidpushnotification;

import org.apache.cordova.DroidGap;

import android.os.Bundle;
import android.view.Menu;

public class LKRActivity extends DroidGap {

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  super.loadUrl("file:///android_asset/www/index.html");
 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.activity_main, menu);
  return true;
 }
}

MainActivity.java

package com.example.sampleandroidpushnotification;

import java.io.IOException;
import java.io.InputStream;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;

import com.google.android.gcm.GCMRegistrar;

 public class MainActivity extends Activity {
  String regId ;
     private static final String TAG = "Push Notification Demo Activity";
     private static final String SENDER_ID = "XXXXXXXX";
     
     String notificationTitle;
     String notificationMessage;

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         
         notificationTitle=getIntent().getStringExtra("notificationTitle");
         notificationMessage=getIntent().getStringExtra("notificationMessage");

         GCMRegistrar.checkDevice(this);
         GCMRegistrar.checkManifest(this);
         regId = GCMRegistrar.getRegistrationId(this);
         if (regId.equals("")) {
          GCMRegistrar.register(this, "XXXXXXXX");
          regId = GCMRegistrar.getRegistrationId(this);
         } else {
           Log.v(TAG, "Already registered : "+regId);
         }
         try {
    ExecuteRest();
   } catch (ClientProtocolException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
     }

     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.activity_main, menu);
         return true;
     }
     
     
     
     public String ExecuteRest() throws ClientProtocolException, IOException{
      Intent notificationIntent = new Intent(this.getApplicationContext(),TestActivity.class);
    
    notificationIntent.putExtra("gcmId", regId);
    notificationIntent.putExtra("notificationMessage", notificationMessage);
    notificationIntent.putExtra("notificationTitle", notificationTitle);
    startActivity(notificationIntent);
   return null;
  }
  
  protected String getASCIIContentFromEntity(HttpEntity entity)
    throws IllegalStateException, IOException {
   InputStream in = entity.getContent();
   StringBuffer out = new StringBuffer();
   int n = 1;
   while (n > 0) {
    byte[] b = new byte[4096];
    n = in.read(b);
    if (n > 0)
     out.append(new String(b, 0, n));
   }
   return out.toString();
  }
 }

in the above java file observe this two lines

private static final String SENDER_ID = "XXXXXXXX";

GCMRegistrar.register(this, "XXXXXXXX");


instead of XXXXXXX you just put your sender ID


Push.java

package com.example.sampleandroidpushnotification;

import java.util.List;
import java.util.Vector;

import javapns.communication.exceptions.CommunicationException;
import javapns.communication.exceptions.KeystoreException;
import javapns.devices.Device;
import javapns.devices.Devices;
import javapns.devices.exceptions.InvalidDeviceTokenFormatException;
import javapns.devices.implementations.basic.BasicDevice;
import javapns.feedback.AppleFeedbackServer;
import javapns.feedback.AppleFeedbackServerBasicImpl;
import javapns.feedback.FeedbackServiceManager;
import javapns.notification.AppleNotificationServer;
import javapns.notification.AppleNotificationServerBasicImpl;
import javapns.notification.NewsstandNotificationPayload;
import javapns.notification.Payload;
import javapns.notification.PayloadPerDevice;
import javapns.notification.PushNotificationManager;
import javapns.notification.PushNotificationPayload;
import javapns.notification.PushedNotification;
import javapns.notification.PushedNotifications;
import javapns.notification.transmission.NotificationThread;
import javapns.notification.transmission.NotificationThreads;
import javapns.notification.transmission.PushQueue;

/**
 * <p>Main class for easily interacting with the Apple Push Notification System</p>
 * 
 * <p>This is the best starting point for pushing simple or custom notifications,
 * or for contacting the Feedback Service to cleanup your list of devices.</p>
 * 
 * <p>The <b>JavaPNS</b> library also includes more advanced options such as
 * multithreaded transmission, special payloads, and more.
 * See the library's documentation at <a href="http://code.google.com/p/javapns/">http://code.google.com/p/javapns/</a>
 * for more information.</p>
 * 
 * @author Sylvain Pedneault
 * @see NotificationThreads
 */
public class Push {

 private Push() {

 }


 /**
  * Push a simple alert to one or more devices.
  * 
  * @param message the alert message to push.
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param devices a list or an array of tokens or devices: {@link java.lang.String String[]}, {@link java.util.List}<{@link java.lang.String}>, {@link javapns.devices.Device Device[]}, {@link java.util.List}<{@link javapns.devices.Device}>, {@link java.lang.String} or {@link javapns.devices.Device}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 public static PushedNotifications alert(String message, Object keystore, String password, boolean production, Object devices) throws CommunicationException, KeystoreException {
  return sendPayload(PushNotificationPayload.alert(message), keystore, password, production, devices);
 }


 /**
  * Push a simple badge number to one or more devices.
  * 
  * @param badge the badge number to push.
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param devices a list or an array of tokens or devices: {@link java.lang.String String[]}, {@link java.util.List}<{@link java.lang.String}>, {@link javapns.devices.Device Device[]}, {@link java.util.List}<{@link javapns.devices.Device}>, {@link java.lang.String} or {@link javapns.devices.Device}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 public static PushedNotifications badge(int badge, Object keystore, String password, boolean production, Object devices) throws CommunicationException, KeystoreException {
  return sendPayload(PushNotificationPayload.badge(badge), keystore, password, production, devices);
 }


 /**
  * Push a simple sound name to one or more devices.
  * 
  * @param sound the sound name (stored in the client app) to push.
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param devices a list or an array of tokens or devices: {@link java.lang.String String[]}, {@link java.util.List}<{@link java.lang.String}>, {@link javapns.devices.Device Device[]}, {@link java.util.List}<{@link javapns.devices.Device}>, {@link java.lang.String} or {@link javapns.devices.Device}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 public static PushedNotifications sound(String sound, Object keystore, String password, boolean production, Object devices) throws CommunicationException, KeystoreException {
  return sendPayload(PushNotificationPayload.sound(sound), keystore, password, production, devices);
 }


 /**
  * Push a notification combining an alert, a badge and a sound. 
  * 
  * @param message the alert message to push (set to null to skip).
  * @param badge the badge number to push (set to -1 to skip).
  * @param sound the sound name to push (set to null to skip).
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param devices a list or an array of tokens or devices: {@link java.lang.String String[]}, {@link java.util.List}<{@link java.lang.String}>, {@link javapns.devices.Device Device[]}, {@link java.util.List}<{@link javapns.devices.Device}>, {@link java.lang.String} or {@link javapns.devices.Device}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 public static PushedNotifications combined(String message, int badge, String sound, Object keystore, String password, boolean production, Object devices) throws CommunicationException, KeystoreException {
  return sendPayload(PushNotificationPayload.combined(message, badge, sound), keystore, password, production, devices);
 }


 /**
  * Push a content-available notification for Newsstand.
  * 
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param devices a list or an array of tokens or devices: {@link java.lang.String String[]}, {@link java.util.List}<{@link java.lang.String}>, {@link javapns.devices.Device Device[]}, {@link java.util.List}<{@link javapns.devices.Device}>, {@link java.lang.String} or {@link javapns.devices.Device}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 public static PushedNotifications contentAvailable(Object keystore, String password, boolean production, Object devices) throws CommunicationException, KeystoreException {
  return sendPayload(NewsstandNotificationPayload.contentAvailable(), keystore, password, production, devices);
 }


 /**
  * Push a special test notification with an alert message containing useful debugging information.
  * 
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param devices a list or an array of tokens or devices: {@link java.lang.String String[]}, {@link java.util.List}<{@link java.lang.String}>, {@link javapns.devices.Device Device[]}, {@link java.util.List}<{@link javapns.devices.Device}>, {@link java.lang.String} or {@link javapns.devices.Device}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 public static PushedNotifications test(Object keystore, String password, boolean production, Object devices) throws CommunicationException, KeystoreException {
  return sendPayload(PushNotificationPayload.test(), keystore, password, production, devices);
 }


 /**
  * Push a preformatted payload to a list of devices.
  * 
  * @param payload a simple or complex payload to push.
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param devices a list or an array of tokens or devices: {@link java.lang.String String[]}, {@link java.util.List}<{@link java.lang.String}>, {@link javapns.devices.Device Device[]}, {@link java.util.List}<{@link javapns.devices.Device}>, {@link java.lang.String} or {@link javapns.devices.Device}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 public static PushedNotifications payload(Payload payload, Object keystore, String password, boolean production, Object devices) throws CommunicationException, KeystoreException {
  return sendPayload(payload, keystore, password, production, devices);
 }


 /**
  * Push a preformatted payload to a list of devices.
  * 
  * @param payload a simple or complex payload to push.
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param devices a list or an array of tokens or devices: {@link java.lang.String String[]}, {@link java.util.List}<{@link java.lang.String}>, {@link javapns.devices.Device Device[]}, {@link java.util.List}<{@link javapns.devices.Device}>, {@link java.lang.String} or {@link javapns.devices.Device}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 private static PushedNotifications sendPayload(Payload payload, Object keystore, String password, boolean production, Object devices) throws CommunicationException, KeystoreException {
  PushedNotifications notifications = new PushedNotifications();
  if (payload == null) return notifications;
  PushNotificationManager pushManager = new PushNotificationManager();
  try {
   AppleNotificationServer server = new AppleNotificationServerBasicImpl(keystore, password, production);
   pushManager.initializeConnection(server);
   List<Device> deviceList = Devices.asDevices(devices);
   Devices.evaluateEfficiency(deviceList);
   notifications.setMaxRetained(deviceList.size());
   for (Device device : deviceList) {
    try {
     BasicDevice.validateTokenFormat(device.getToken());
     PushedNotification notification = pushManager.sendNotification(device, payload, false);
     notifications.add(notification);
    } catch (InvalidDeviceTokenFormatException e) {
     notifications.add(new PushedNotification(device, payload, e));
    }
   }
  } finally {
   try {
    pushManager.stopConnection();
   } catch (Exception e) {
   }
  }
  return notifications;
 }


 /**
  * Push a preformatted payload to a list of devices using multiple simulatenous threads (and connections).
  * 
  * @param payload a simple or complex payload to push.
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param numberOfThreads the number of parallel threads to use to push the notifications
  * @param devices a list or an array of tokens or devices: {@link java.lang.String String[]}, {@link java.util.List}<{@link java.lang.String}>, {@link javapns.devices.Device Device[]}, {@link java.util.List}<{@link javapns.devices.Device}>, {@link java.lang.String} or {@link javapns.devices.Device}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws Exception thrown if any critical exception occurs
  */
 public static PushedNotifications payload(Payload payload, Object keystore, String password, boolean production, int numberOfThreads, Object devices) throws Exception {
  if (numberOfThreads <= 0) return sendPayload(payload, keystore, password, production, devices);
  AppleNotificationServer server = new AppleNotificationServerBasicImpl(keystore, password, production);
  List<Device> deviceList = Devices.asDevices(devices);
  NotificationThreads threads = new NotificationThreads(server, payload, deviceList, numberOfThreads);
  threads.start();
  try {
   threads.waitForAllThreads(true);
  } catch (InterruptedException e) {
  }
  return threads.getPushedNotifications(true);
 }


 /**
  * Build and start an asynchronous queue for sending notifications later without opening and closing connections.
  * The returned queue is not started, meaning that underlying threads and connections are not initialized.
  * The queue will start if you invoke its start() method or one of the add() methods.
  * Once the queue is started, its underlying thread(s) and connection(s) will remain active until the program ends.
  * 
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param numberOfThreads the number of parallel threads to use to push the notifications
  * @return a live queue to which you can add notifications to be sent asynchronously
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  */
 public static PushQueue queue(Object keystore, String password, boolean production, int numberOfThreads) throws KeystoreException {
  AppleNotificationServer server = new AppleNotificationServerBasicImpl(keystore, password, production);
  PushQueue queue = numberOfThreads <= 1 ? new NotificationThread(server) : new NotificationThreads(server, numberOfThreads);
  return queue;
 }


 /**
  * Push a different preformatted payload for each device.
  * 
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param payloadDevicePairs a list or an array of PayloadPerDevice: {@link java.util.List}<{@link javapns.notification.PayloadPerDevice}>, {@link javapns.notification.PayloadPerDevice PayloadPerDevice[]} or {@link javapns.notification.PayloadPerDevice}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 public static PushedNotifications payloads(Object keystore, String password, boolean production, Object payloadDevicePairs) throws CommunicationException, KeystoreException {
  return sendPayloads(keystore, password, production, payloadDevicePairs);
 }


 /**
  * Push a different preformatted payload for each device using multiple simulatenous threads (and connections).
  * 
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param numberOfThreads the number of parallel threads to use to push the notifications
  * @param payloadDevicePairs a list or an array of PayloadPerDevice: {@link java.util.List}<{@link javapns.notification.PayloadPerDevice}>, {@link javapns.notification.PayloadPerDevice PayloadPerDevice[]} or {@link javapns.notification.PayloadPerDevice}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws Exception thrown if any critical exception occurs
  */
 public static PushedNotifications payloads(Object keystore, String password, boolean production, int numberOfThreads, Object payloadDevicePairs) throws Exception {
  if (numberOfThreads <= 0) return sendPayloads(keystore, password, production, payloadDevicePairs);
  AppleNotificationServer server = new AppleNotificationServerBasicImpl(keystore, password, production);
  List<PayloadPerDevice> payloadPerDevicePairs = Devices.asPayloadsPerDevices(payloadDevicePairs);
  NotificationThreads threads = new NotificationThreads(server, payloadPerDevicePairs, numberOfThreads);
  threads.start();
  try {
   threads.waitForAllThreads(true);
  } catch (InterruptedException e) {
  }
  return threads.getPushedNotifications(true);
 }


 /**
  * Push a different preformatted payload for each device.
  * 
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @param payloadDevicePairs a list or an array of PayloadPerDevice: {@link java.util.List}<{@link javapns.notification.PayloadPerDevice}>, {@link javapns.notification.PayloadPerDevice PayloadPerDevice[]} or {@link javapns.notification.PayloadPerDevice}
  * @return a list of pushed notifications, each with details on transmission results and error (if any)
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 private static PushedNotifications sendPayloads(Object keystore, String password, boolean production, Object payloadDevicePairs) throws CommunicationException, KeystoreException {
  PushedNotifications notifications = new PushedNotifications();
  if (payloadDevicePairs == null) return notifications;
  PushNotificationManager pushManager = new PushNotificationManager();
  try {
   AppleNotificationServer server = new AppleNotificationServerBasicImpl(keystore, password, production);
   pushManager.initializeConnection(server);
   List<PayloadPerDevice> pairs = Devices.asPayloadsPerDevices(payloadDevicePairs);
   Devices.evaluateEfficiency(pairs);
   notifications.setMaxRetained(pairs.size());
   for (PayloadPerDevice ppd : pairs) {
    Device device = ppd.getDevice();
    Payload payload = ppd.getPayload();
    try {
     PushedNotification notification = pushManager.sendNotification(device, payload, false);
     notifications.add(notification);
    } catch (Exception e) {
     notifications.add(new PushedNotification(device, payload, e));
    }
   }
  } finally {
   try {
    pushManager.stopConnection();
   } catch (Exception e) {
   }
  }
  return notifications;
 }


 /**
  * <p>Retrieve a list of devices that should be removed from future notification lists.</p>
  * 
  * <p>Devices in this list are ones that you previously tried to push a notification to,
  * but to which Apple could not actually deliver because the device user has either
  * opted out of notifications, has uninstalled your application, or some other conditions.</p>
  * 
  * <p>Important: Apple's Feedback Service always resets its list of inactive devices
  * after each time you contact it.  Calling this method twice will not return the same
  * list of devices!</p>
  * 
  * <p>Please be aware that Apple does not specify precisely when a device will be listed
  * by the Feedback Service.  More specifically, it is unlikely that the device will
  * be  listed immediately if you uninstall the application during testing.  It might
  * get listed after some number of notifications couldn't reach it, or some amount of
  * time has elapsed, or a combination of both.</p>
  * 
  * <p>Further more, if you are using Apple's sandbox servers, the Feedback Service will
  * probably not list your device if you uninstalled your app and it was the last one
  * on your device that was configured to receive notifications from the sandbox.
  * See the library's wiki for more information.</p>
  * 
  * @param keystore a keystore containing your private key and the certificate signed by Apple ({@link java.io.File}, {@link java.io.InputStream}, byte[], {@link java.security.KeyStore} or {@link java.lang.String} for a file path)
  * @param password the keystore's password.
  * @param production true to use Apple's production servers, false to use the sandbox servers.
  * @return a list of devices that are inactive.
  * @throws KeystoreException thrown if an error occurs when loading the keystore
  * @throws CommunicationException thrown if an unrecoverable error occurs while trying to communicate with Apple servers
  */
 public static List<Device> feedback(Object keystore, String password, boolean production) throws CommunicationException, KeystoreException {
  List<Device> devices = new Vector<Device>();
  FeedbackServiceManager feedbackManager = new FeedbackServiceManager();
  AppleFeedbackServer server = new AppleFeedbackServerBasicImpl(keystore, password, production);
  devices.addAll(feedbackManager.getDevices(server));
  return devices;
 }

}

TestActivity.java

package com.example.sampleandroidpushnotification;

import java.io.IOException;
import java.util.ArrayList;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.Menu;
import android.widget.TextView;

import com.google.android.gcm.server.Message;
import com.google.android.gcm.server.MulticastResult;
import com.google.android.gcm.server.Sender;
import com.lkr.pushnotifications.NotificationSuccessActivity;

@TargetApi(9)

public class TestActivity extends Activity {
 String notificationTitle;
 String notificationMessage;

    @TargetApi(9)
 
 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test);
        
      TextView  myText = new TextView(this.getApplicationContext());
        myText.setText("Success fully registered");
        
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();

        StrictMode.setThreadPolicy(policy); 
        Sender sender = new Sender(
    "XXXXXXXXX");
     String   regid= getIntent().getExtras().getString("gcmId");
     
     notificationTitle=getIntent().getExtras().getString("notificationTitle");
     
     notificationMessage=getIntent().getExtras().getString("notificationMessage");

  Message message = new Message.Builder().addData("message",
    notificationMessage).build();

  

   ArrayList<String> oneDevice = new ArrayList<String>();
   oneDevice.add(regid);
   // MulticastResult result = sender.send(message, oneDevice,
   // 1);
   try {
    MulticastResult result = sender.send(message, oneDevice, 1);
    sender.send(message, oneDevice, 1);
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   System.out.println("Message sent to One Device");
   
   startActivity(new Intent(TestActivity.this, NotificationSuccessActivity.class));

 
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_test, menu);
        return true;
    }

    
}

observe the above java file

Sender sender = new Sender(
    "XXXXXXXXX");

instead of XXXXXXX you just put your API Key


NotificationSuccessActivity.java

package com.lkr.pushnotifications;

import org.apache.cordova.DroidGap;

import android.os.Bundle;
import android.view.Menu;

import com.example.sampleandroidpushnotification.R;

public class NotificationSuccessActivity extends DroidGap {

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  super.loadUrl("file:///android_asset/www/success.html");
 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.activity_main, menu);
  return true;
 }
}

PushNotificationPlugin.java

package com.lkr.pushnotifications;

import org.apache.cordova.api.Plugin;
import org.apache.cordova.api.PluginResult;
import org.apache.cordova.api.PluginResult.Status;
import org.json.JSONArray;
import org.json.JSONException;

import android.content.Intent;

import com.example.sampleandroidpushnotification.MainActivity;

public class PushNotificationPlugin extends Plugin {
 public final String ACTION_SEND_NOTIFICATION = "PushNotification";

 @Override
 public PluginResult execute(String action, JSONArray arg1, String callbackId) {
  PluginResult result = new PluginResult(Status.INVALID_ACTION);

  if (action.equals(ACTION_SEND_NOTIFICATION)) {
   try {
    String notificationTitle = arg1.getString(0);
    String notificationMessage = arg1.getString(1);
    sendNotification(notificationTitle, notificationMessage);
    result = new PluginResult(Status.OK);
   } catch (JSONException ex) {
    result = new PluginResult(Status.JSON_EXCEPTION,
      ex.getMessage());
   }
  }

  return result;
 }

 private String sendNotification(String notificationTitle, String notificationMessage) {
            //intent = new Intent().setClass(this.cordova.getActivity(), org.apache.cordova.DroidGap.class);
   Intent intent = new Intent(this.cordova.getActivity(), MainActivity.class);


            intent.putExtra("notificationTitle", notificationTitle);   
            intent.putExtra("notificationMessage", notificationMessage);  
        this.cordova.getActivity().startActivity(intent);
        return "";
 }

}

index.html

<!DOCTYPE html>
<html>
 <title> Push Notification </title>
    <head> 
        <script src="jquery-1.8.2.js" type= "text/javascript"></script>
        <script src="jquery.mobile-1.2.0.js" type="text/javascript"></script>
        <script src="cordova-2.3.0.js" type="text/javascript"></script>
        <script src="pushnotification.js" type="text/javascript"></script>
        <script type="text/javascript">
        function onDeviceReady () {
   $('#send').bind('click', function () {
   //alert('notificationTitle: ' + $('#notificationTitle').val() + ' notificationMessage: ' + $('#notificationMessage').val());
   window.plugins.pushnotification.send($('#notificationTitle').val(),
                       $('#notificationMessage').val(),
                       function () {
   alert('notificationMessage sent successfully'); 
   },
        function (e) {
        alert('notificationMessage Failed:' + e);
        }
   );
   });
   
   $('#send_by_lkr').bind('click', function () {
    //alert('notificationTitle: ' + $('#notificationTitle').val() + ' notificationMessage: ' + $('#notificationMessage').val());
    window.plugins.pushnotification.send_by_lkr($('#notificationTitle').val(),
                        $('#notificationMessage').val(),
                        function () {
    alert('notificationMessage sent successfully'); 
    },
         function (e) {
         alert('notificationMessage Failed:' + e);
         }
    );
    });
        }
        document.addEventListener("deviceready", onDeviceReady, false);
        </script>
        <link rel="stylesheet" type="text/css" href= "jquery.mobile-1.2.0.min.css">
        <meta name="viewport" content= "width=device-width; height=device-height; user-scalable=no">
</head>
<body>
<div id="startPage" data-role="page" data-theme="a">
<div data-role="header">
<h1>PushNotification Demo</h1>
</div>
<div data-role="content">
<!-- <label for="notificationTitle">Notification Title:</label>
<input type="tel" id="notificationTitle" name="notificationTitle" placeholder="Notificatio Title"/> -->
<label for="notificationMessage">notificationMessage:</label>
<textarea id="notificationMessage" name="notificationMessage"></textarea> 
<a href="#" id="send" data-role="button">Send</a>

<!-- <a href="#" id="send_by_lkr" data-role="button">send_by_lkr</a>  -->
</div>
</div>
</body>
</html>

pushnotification.js

var PushNotificationPlugin = function () {};

PushNotificationPlugin.prototype.send = function (notificationTitle, notificationMessage) {
    return PhoneGap.exec(null,null , 'PushNotificationPlugin', "PushNotification", [notificationTitle, notificationMessage]);
};

PushNotificationPlugin.prototype.send_by_lkr = function(notificationTitle, notificationMessage) {
    return cordova.exec(this._onEvent, this._onError, "PushNotificationPlugin", "PushNotification", [notificationTitle, notificationMessage]);
};

/*PhoneGap.addConstructor(function() {
 alert("helllo");
    PhoneGap.addPlugin("pushnotification", new PushNotificationPlugin());
});*/

cordova.addConstructor(function() {
 window.pushnotification = new PushNotificationPlugin();
 // backwards compatibility 
 window.plugins = window.plugins || {};
 window.plugins.pushnotification = window.pushnotification;
});

/**
 * Method called when the child browser has an event.
 */
PushNotificationPlugin.prototype._onEvent = function(data) {
    /*if (data.type == PushNotificationPlugin.CLOSE_EVENT && typeof window.plugins.childBrowser.onClose === "function") {
        window.plugins.childBrowser.onClose();
    }
    if (data.type == ChildBrowser.LOCATION_CHANGED_EVENT && typeof window.plugins.childBrowser.onLocationChange === "function") {
        window.plugins.childBrowser.onLocationChange(data.location);
    }*/
 
 alert(data+"   success");
};

/**
 * Method called when the child browser has an error.
 */
PushNotificationPlugin.prototype._onError = function(data) {
    /*if (typeof window.plugins.childBrowser.onError === "function") {
        window.plugins.childBrowser.onError(data);
    }*/
 alert(data+" error");
};

success.html

<!DOCTYPE html>
<html>
 <title> Push Notification </title>
    <head> 
        <script src="jquery-1.8.2.js" type= "text/javascript"></script>
        <script src="jquery.mobile-1.2.0.js" type="text/javascript"></script>
        <script src="cordova-2.3.0.js" type="text/javascript"></script>
        <script src="pushnotification.js" type="text/javascript"></script>
        <link rel="stylesheet" type="text/css" href= "jquery.mobile-1.2.0.min.css">
        <meta name="viewport" content= "width=device-width; height=device-height; user-scalable=no">
</head>
<body>
<div id="startPage" data-role="page" data-theme="a">
<div data-role="header">
<h1>PushNotification Demo</h1>
</div>
<div data-role="content">
<h1> notificaion success fully sent</h1>

<!-- <a href="#" id="send_by_lkr" data-role="button">send_by_lkr</a>  -->
</div>
</div>
</body>
</html>

config.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
       Licensed to the Apache Software Foundation (ASF) under one
       or more contributor license agreements.  See the NOTICE file
       distributed with this work for additional information
       regarding copyright ownership.  The ASF licenses this file
       to you under the Apache License, Version 2.0 (the
       "License"); you may not use this file except in compliance
       with the License.  You may obtain a copy of the License at

         http://www.apache.org/licenses/LICENSE-2.0

       Unless required by applicable law or agreed to in writing,
       software distributed under the License is distributed on an
       "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
       KIND, either express or implied.  See the License for the
       specific language governing permissions and limitations
       under the License.
-->
<cordova>

    <!--
    access elements control the Android whitelist.
    Domains are assumed blocked unless set otherwise
    -->

    <access origin="http://127.0.0.1*" /> <!-- allow local pages -->


    <!-- <access origin="https://example.com" /> allow any secure requests to example.com -->
    <!-- <access origin="https://example.com" subdomains="true" /> such as above, but including subdomains, such as www -->
    <!-- <access origin=".*"/> Allow all domains, suggested development use only -->

    <log level="DEBUG" />

    <preference
        name="useBrowserHistory"
        value="false" />
    
    <plugins>
    <plugin name="App" value="org.apache.cordova.App"/>
    <plugin name="Geolocation" value="org.apache.cordova.GeoBroker"/>
    <plugin name="Device" value="org.apache.cordova.Device"/>
    <plugin name="Accelerometer" value="org.apache.cordova.AccelListener"/>
    <plugin name="Compass" value="org.apache.cordova.CompassListener"/>
    <plugin name="Media" value="org.apache.cordova.AudioHandler"/>
    <plugin name="Camera" value="org.apache.cordova.CameraLauncher"/>
    <plugin name="Contacts" value="org.apache.cordova.ContactManager"/>
    <plugin name="File" value="org.apache.cordova.FileUtils"/>
 <plugin name="NetworkStatus" value="org.apache.cordova.NetworkManager"/> 
    <plugin name="Notification" value="org.apache.cordova.Notification"/>
    <plugin name="Storage" value="org.apache.cordova.Storage"/>
    <plugin name="Temperature" value="org.apache.cordova.TempListener"/>
    <plugin name="FileTransfer" value="org.apache.cordova.FileTransfer"/>
    <plugin name="Capture" value="org.apache.cordova.Capture"/>
    <plugin name="Battery" value="org.apache.cordova.BatteryListener"/>
    <plugin name="PushNotificationPlugin" value="com.lkr.pushnotifications.PushNotificationPlugin" />
</plugins>

</cordova>

manifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.sampleandroidpushnotification"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <permission
        android:name="com.example.sampleandroidpushnotification.permission.C2D_MESSAGE"
        android:protectionLevel="signature" />

    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.BROADCAST_STICKY" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <uses-permission android:name="com.example.sampleandroidpushnotification.permission.C2D_MESSAGE" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.USE_CREDENTIALS" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="com.android.vending.BILLING" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".LKRActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <receiver
            android:name="com.google.android.gcm.GCMBroadcastReceiver"
            android:permission="com.google.android.c2dm.permission.SEND" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

                <category android:name="com.example.sampleandroidpushnotification" />
            </intent-filter>
        </receiver>

        <service android:name="com.example.sampleandroidpushnotification.GCMIntentService" />

        <activity
            android:name=".TestActivity"
            android:label="@string/title_activity_test" >
            
        </activity>
        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" />
        
       <activity
            android:name="com.lkr.pushnotifications.NotificationSuccessActivity"
            android:label="@string/title_activity_main" /> 
    </application>

</manifest>

Note:::

you have gcm.jar, gcm-server.jar,JavaPNS_2.3_Beta_2.jar,json-simple-1.1.jar,

the above jar files are there in your libs folder

Integrating Jasper Reports With Struts2-jasper Plugin

2013-02-21T21:46:00.000-08:00

For integrating your jasper report into the web application with struts2-jasper-plugin,

you need to do the following things

struts.xml

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
 <constant name="struts.devMode" value="true" />
 <constant name="struts.action.excludePattern" value="/servlets/.*" />
 <package name="default " namespace="/"
  extends="struts-default,json-default,jasperreport-default">
  <result-types>
   <result-type name="jasper" class="org.apache.struts2.views.jasperreports.JasperReportsResult"/>
  </result-types>
  
  <action name="myJasperTest" class="com.jasper.admin.action.JasperAction">
   <result name="success" type="jasper">
    <param name="location">/WEB-INF/classes/jasper/our_compiled_template.jasper</param>
             <param name="dataSource">myList</param>
             <param name="format">HTML</param>
             <param name="imageServletUrl">/servlets/image?image=</param>
         </result>
     </action>
    </package>
</struts>

in the above struts.xml observe orange color line, these lines are very important for struts-jasper-plugin

JasperAction.java

package com.jasper.admin.action;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts2.interceptor.ServletRequestAware;

import net.sf.jasperreports.engine.JasperCompileManager;

import com.opensymphony.xwork2.ActionSupport;

/**
 * @author KONDA REDDY
 *
 */
public class JasperAction extends ActionSupport implements ServletRequestAware{

    /** List to use as our JasperReports dataSource. */
    private List<Person> myList;
    private HttpServletRequest request = null;
    
    /* (non-Javadoc)
  * @see org.apache.struts2.interceptor.ServletRequestAware#setServletRequest(javax.servlet.http.HttpServletRequest)
  */
 public void setServletRequest(HttpServletRequest request) {
  this.request = request;
 }


    public String execute() throws Exception {

        // Create some imaginary persons.
        Person p1 = new Person(new Long(1), "KONDA REDDY", "LINGAMDINNE");
        Person p2 = new Person(new Long(2), "PRASAD REDDY", "LINGAMDINNE");
        Person p3 = new Person(new Long(3), "VENKATA JAYA SAI DEEP KUMAR REDDY", "ANNAPUREDDY");
        Person p4 = new Person(new Long(4), "KRANTHI KUMAR REDDY", "ANNAPUREDDY");

        // Store people in our dataSource list (normally they would come from a database).
        myList = new ArrayList<Person>();
        myList.add(p1);
        myList.add(p2);
        myList.add(p3);
        myList.add(p4);
        
        String dir = request.getRealPath("/");

        // Normally we would provide a pre-compiled .jrxml file
        // or check to make sure we don't compile on every request.
        try {
            JasperCompileManager.compileReportToFile(dir+ "/WEB-INF/classes/jasper/our_jasper_template.jrxml", dir+ "/WEB-INF/classes/jasper/our_compiled_template.jasper");
        } catch (Exception e) {
            e.printStackTrace();
            return ERROR;
        }

        return SUCCESS;
    }

    public List<Person> getMyList() {
        return myList;
    }
}

Person.java

package com.jasper.admin.action;

/**
 * @author KONDA REDDY
 *
 */
public class Person {

    private Long id;

    private String name;

    private String lastName;

    public Person() {
    }

    /**
     * @param name
     * @param lastName
     */
    public Person(String name, String lastName) {
        this.name = name;
        this.lastName = lastName;
    }

    /**
     * @param id
     * @param name
     * @param lastName
     */
    public Person(Long id, String name, String lastName) {
        this.id = id;
        this.name = name;
        this.lastName = lastName;
    }

 /**
  * @return the id
  */
 public Long getId() {
  return id;
 }

 /**
  * @param id the id to set
  */
 public void setId(Long id) {
  this.id = id;
 }

 /**
  * @return the name
  */
 public String getName() {
  return name;
 }

 /**
  * @param name the name to set
  */
 public void setName(String name) {
  this.name = name;
 }

 /**
  * @return the lastName
  */
 public String getLastName() {
  return lastName;
 }

 /**
  * @param lastName the lastName to set
  */
 public void setLastName(String lastName) {
  this.lastName = lastName;
 }

    
}

our_jasper_template.jrxml

<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version last-->
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="jasper_test" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="30" bottomMargin="30" uuid="d22f49ae-9929-44f6-8c5c-ee34a0587e14">
 <property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
 <style name="Title" forecolor="#FFFFFF" fontName="Times New Roman" fontSize="50" isBold="false" pdfFontName="Times-Bold"/>
 <field name="name" class="java.lang.String"/>
 <field name="lastName" class="java.lang.String"/>
 <title>
  <band height="65" splitType="Stretch">
   <frame>
    <reportElement uuid="19675ab3-ade7-4b13-b4f8-6af91e4d3bcf" mode="Opaque" x="0" y="0" width="555" height="65" forecolor="#006699" backcolor="#006699"/>
    <staticText>
     <reportElement uuid="19325fe6-91bb-4925-8637-30b76da773cb" style="Title" x="0" y="0" width="555" height="65"/>
     <textElement textAlignment="Right">
      <font size="54" isBold="false"/>
     </textElement>
     <text><![CDATA[Konda Reddy]]></text>
    </staticText>
   </frame>
  </band>
 </title>
 <pageHeader>
  <band splitType="Stretch"/>
 </pageHeader>
 <columnHeader>
  <band height="20" splitType="Stretch">
   <staticText>
    <reportElement uuid="6b8becc8-fd1a-441c-ad9f-e02c1acb220a" x="180" y="0" width="180" height="20"/>
    <textElement>
     <font isUnderline="true"/>
    </textElement>
    <text><![CDATA[NAME]]></text>
   </staticText>
   <staticText>
    <reportElement uuid="5aabd0db-f280-48fa-a018-2e6055e8c701" x="360" y="0" width="180" height="20"/>
    <textElement>
     <font isUnderline="true"/>
    </textElement>
    <text><![CDATA[LASTNAME]]></text>
   </staticText>
  </band>
 </columnHeader>
 <detail>
  <band height="20" splitType="Stretch">
   <textField>
    <reportElement uuid="3265c8f6-f7e5-482d-b555-af4db49f206b" x="180" y="0" width="180" height="15"/>
    <textElement/>
    <textFieldExpression><![CDATA[$F{name}]]></textFieldExpression>
   </textField>
   <textField>
    <reportElement uuid="57a43440-4996-4ef4-87da-525f76f87da5" x="360" y="0" width="180" height="15"/>
    <textElement/>
    <textFieldExpression><![CDATA[$F{lastName}]]></textFieldExpression>
   </textField>
  </band>
 </detail>
 <columnFooter>
  <band splitType="Stretch"/>
 </columnFooter>
 <pageFooter>
  <band height="15" splitType="Stretch">
   <staticText>
    <reportElement uuid="9c36d27e-b869-41d6-9424-f3900f7626c8" x="0" y="0" width="40" height="15"/>
    <textElement/>
    <text><![CDATA[Page:]]></text>
   </staticText>
   <textField>
    <reportElement uuid="d0ae07db-5f4d-458b-beb2-b49566c42e88" x="40" y="0" width="100" height="15"/>
    <textElement/>
    <textFieldExpression><![CDATA[$V{PAGE_NUMBER}]]></textFieldExpression>
   </textField>
  </band>
 </pageFooter>
 <summary>
  <band splitType="Stretch"/>
 </summary>
</jasperReport>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    id="starter"
    version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" >

    <display-name>LKREDDY</display-name>

   <filter>
    <filter-name>action2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    <!-- END SNIPPET: filter -->
    <filter-mapping>
        <filter-name>action2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <servlet>
  <servlet-name>ImageServlet</servlet-name>
  <servlet-class>net.sf.jasperreports.j2ee.servlets.ImageServlet</servlet-class>
 </servlet>
 
    <servlet-mapping>
   <servlet-name>ImageServlet</servlet-name>
   <url-pattern>/servlets/image</url-pattern>
 </servlet-mapping>

    <!-- Welcome file lists -->

    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>

</web-app>

index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
 pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib uri="/struts-tags" prefix="s"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

<script language="JavaScript">
 function calcHeight() {
  //find the height of the internal page
  var the_height = document.getElementById('the_iframe').contentWindow.document.body.scrollHeight;
  //change the height of the iframe
  document.getElementById('the_iframe').height = the_height;
 }
</script>
<title>Insert title here</title>
</head>
<body>

 <s:url id="jasperList" action="myJasperTest"></s:url>
 <s:a href="%{jasperList}">jasperList</s:a>

 <iframe width="100%" id="the_iframe" onLoad="calcHeight();"
  src="myJasperTest" scrolling="NO" frameborder="0" height="1">  An iframe capable browser is required to view this report. </iframe>
</body>
</html>

Sending An e-mail with attachment in my Phonegap Android Application

2012-12-11T21:34:00.000-08:00

EmailActivity.java

package com.lkr.androidemail;

import org.apache.cordova.DroidGap;

import android.os.Bundle;

public class EmailActivity extends DroidGap {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        super.loadUrl("file:///android_asset/www/index.html");
    }

}

WebIntent.java

package com.borismus.webintent;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

import org.apache.cordova.DroidGap;
import org.apache.cordova.api.Plugin;
import org.apache.cordova.api.PluginResult;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Environment;
import android.text.Html;
import android.view.View;

/**
 * WebIntent is a PhoneGap plugin that bridges Android intents and web
 * applications:
 * 
 * 1. web apps can spawn intents that call native Android applications. 2.
 * (after setting up correct intent filters for PhoneGap applications), Android
 * intents can be handled by PhoneGap web applications.
 * 
 * @author boris@borismus.com
 * 
 */
public class WebIntent extends Plugin {

    private String onNewIntentCallback = null;

    /**
     * Executes the request and returns PluginResult.
     * 
     * @param action
     *            The action to execute.
     * @param args
     *            JSONArray of arguments for the plugin.
     * @param callbackId
     *            The callback id used when calling back into JavaScript.
     * @return A PluginResult object with a status and message.
     */
    public PluginResult execute(String action, JSONArray args, String callbackId) {
        try {
            if (action.equals("startActivity")) {
                if (args.length() != 1) {
                    return new PluginResult(PluginResult.Status.INVALID_ACTION);
                }

                // Parse the arguments
                JSONObject obj = args.getJSONObject(0);
                String type = obj.has("type") ? obj.getString("type") : null;
                Uri uri = obj.has("url") ? Uri.parse(obj.getString("url")) : null;
                JSONObject extras = obj.has("extras") ? obj.getJSONObject("extras") : null;
                Map<String, String> extrasMap = new HashMap<String, String>();

                // Populate the extras if any exist
                if (extras != null) {
                    JSONArray extraNames = extras.names();
                    for (int i = 0; i < extraNames.length(); i++) {
                        String key = extraNames.getString(i);
                        String value = extras.getString(key);
                        extrasMap.put(key, value);
                    }
                }

                startActivity(obj.getString("action"), uri, type, extrasMap);
                return new PluginResult(PluginResult.Status.OK);

            } else if (action.equals("hasExtra")) {
                if (args.length() != 1) {
                    return new PluginResult(PluginResult.Status.INVALID_ACTION);
                }
                Intent i = ((DroidGap)this.cordova.getContext()).getIntent();
                String extraName = args.getString(0);
                return new PluginResult(PluginResult.Status.OK, i.hasExtra(extraName));

            } else if (action.equals("getExtra")) {
                if (args.length() != 1) {
                    return new PluginResult(PluginResult.Status.INVALID_ACTION);
                }
                Intent i = ((DroidGap)this.cordova.getContext()).getIntent();
                String extraName = args.getString(0);
                if (i.hasExtra(extraName)) {
                    return new PluginResult(PluginResult.Status.OK, i.getStringExtra(extraName));
                } else {
                    return new PluginResult(PluginResult.Status.ERROR);
                }
            } else if (action.equals("getUri")) {
                if (args.length() != 0) {
                    return new PluginResult(PluginResult.Status.INVALID_ACTION);
                }

                Intent i = ((DroidGap)this.cordova.getContext()).getIntent();
                String uri = i.getDataString();
                return new PluginResult(PluginResult.Status.OK, uri);
            } else if (action.equals("onNewIntent")) {
                if (args.length() != 0) {
                    return new PluginResult(PluginResult.Status.INVALID_ACTION);
                }

                this.onNewIntentCallback = callbackId;
                PluginResult result = new PluginResult(PluginResult.Status.NO_RESULT);
                result.setKeepCallback(true);
                return result;
            } else if (action.equals("sendBroadcast")) 
            {
                if (args.length() != 1) {
                    return new PluginResult(PluginResult.Status.INVALID_ACTION);
                }

                // Parse the arguments
                JSONObject obj = args.getJSONObject(0);

                JSONObject extras = obj.has("extras") ? obj.getJSONObject("extras") : null;
                Map<String, String> extrasMap = new HashMap<String, String>();

                // Populate the extras if any exist
                if (extras != null) {
                    JSONArray extraNames = extras.names();
                    for (int i = 0; i < extraNames.length(); i++) {
                        String key = extraNames.getString(i);
                        String value = extras.getString(key);
                        extrasMap.put(key, value);
                    }
                }

                sendBroadcast(obj.getString("action"), extrasMap);
                return new PluginResult(PluginResult.Status.OK);
            }
            return new PluginResult(PluginResult.Status.INVALID_ACTION);
        } catch (JSONException e) {
            e.printStackTrace();
            return new PluginResult(PluginResult.Status.JSON_EXCEPTION);
        }
    }

    @Override
    public void onNewIntent(Intent intent) {
        if (this.onNewIntentCallback != null) {
            PluginResult result = new PluginResult(PluginResult.Status.OK, intent.getDataString());
            result.setKeepCallback(true);
            this.success(result, this.onNewIntentCallback);
        }
    }

    void startActivity(String action, Uri uri, String type, Map<String, String> extras) {
        Intent i = (uri != null ? new Intent(action, uri) : new Intent(action));
        
        if (type != null && uri != null) {
            i.setDataAndType(uri, type); //Fix the crash problem with android 2.3.6
        } else {
            if (type != null) {
                i.setType(type);
            }
        }
        
        for (String key : extras.keySet()) {
            String value = extras.get(key);
            // If type is text html, the extra text must sent as HTML
            if (key.equals(Intent.EXTRA_TEXT) && type.equals("text/html")) {
                i.putExtra(key, Html.fromHtml(value));
            } else if (key.equals(Intent.EXTRA_STREAM)) {
             // image naming and path  to include sd card
                String mPath = Environment.getExternalStorageDirectory().toString() + "/abc.png";   

                // create bitmap screen capture
                Bitmap bitmap;
                View v1 = this.ctx.getActivity().getCurrentFocus();
                v1.setDrawingCacheEnabled(true);
                bitmap = Bitmap.createBitmap(v1.getDrawingCache());
                v1.setDrawingCacheEnabled(false);

                OutputStream fout = null;
                File imageFile = new File(mPath);

                try {
                    fout = new FileOutputStream(imageFile);
                    bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout);
                    fout.flush();
                    fout.close();

                } catch (FileNotFoundException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
             
                // allowes sharing of images as attachments.
                // value in this case should be a URI of a file
                
                System.out.println("image path is:"+mPath);
             System.out.println("streammmmmmm:"+Intent.EXTRA_STREAM);
                i.putExtra(key, Uri.parse(value));
            } else if (key.equals(Intent.EXTRA_EMAIL)) {
                // allows to add the email address of the receiver
                i.putExtra(Intent.EXTRA_EMAIL, new String[] { value });
            } else {
                i.putExtra(key, value);
            }
        }
        this.cordova.getActivity().startActivity(i);
    }

    void sendBroadcast(String action, Map<String, String> extras) {
        Intent intent = new Intent();
        intent.setAction(action);
        for (String key : extras.keySet()) {
            String value = extras.get(key);
            intent.putExtra(key, value);
        }

        ((DroidGap)this.cordova.getContext()).sendBroadcast(intent);
    }
}

index.html

<!DOCTYPE HTML>
<html>
<head>
<title>Cordova</title>

<script src="cordova-2.0.0.js"></script>
<script src="webintent.js"></script>


 <script>

function gomail(){
 alert("mail going");
 var extras = {};
   extras[WebIntent.EXTRA_SUBJECT] = "subject";
   extras[WebIntent.EXTRA_TEXT] = "body";
   extras[WebIntent.EXTRA_STREAM]="file:///mnt/sdcard/abc.png";
   WebIntent.prototype.startActivity({ 
       action: WebIntent.ACTION_SEND,
       type: 'application/octet-stream', 
       extras: extras 
     }, 
     function() {
      alert("success");
     }, 
     function() {
       alert('Failed to send email via Android Intent');
     }
   ); 
}
</script>
 

</head>
<body>
  
   <div>
  
   <h1>Email sending</h1>

<a href="#" onclick="gomail();">emailll</a>
  
 </div>   
  
 
</body>
</html>

webintent.js

/**
 * cordova Web Intent plugin
 * Copyright (c) Boris Smus 2010
 *
 */
var WebIntent = function() { 

};

WebIntent.ACTION_SEND = "android.intent.action.SEND";
WebIntent.ACTION_VIEW= "android.intent.action.VIEW";
WebIntent.EXTRA_TEXT = "android.intent.extra.TEXT";
WebIntent.EXTRA_SUBJECT = "android.intent.extra.SUBJECT";
WebIntent.EXTRA_STREAM = "android.intent.extra.STREAM";
WebIntent.EXTRA_EMAIL = "android.intent.extra.EMAIL";

WebIntent.prototype.startActivity = function(params, success, fail) {
 alert("webintent");
 return cordova.exec(function(args) {
        success(args);
    }, function(args) {
        fail(args);
    }, 'WebIntent', 'startActivity', [params]);
};

WebIntent.prototype.hasExtra = function(params, success, fail) {
 return cordova.exec(function(args) {
        success(args);
    }, function(args) {
        fail(args);
    }, 'WebIntent', 'hasExtra', [params]);
};

WebIntent.prototype.getUri = function(success, fail) {
 return cordova.exec(function(args) {
        success(args);
    }, function(args) {
        fail(args);
    }, 'WebIntent', 'getUri', []);
};

WebIntent.prototype.getExtra = function(params, success, fail) {
 return cordova.exec(function(args) {
        success(args);
    }, function(args) {
        fail(args);
    }, 'WebIntent', 'getExtra', [params]);
};


WebIntent.prototype.onNewIntent = function(callback) {
 return cordova.exec(function(args) {
  callback(args);
    }, function(args) {
    }, 'WebIntent', 'onNewIntent', []);
};

WebIntent.prototype.sendBroadcast = function(params, success, fail) {
    return cordova.exec(function(args) {
        success(args);
    }, function(args) {
        fail(args);
    }, 'WebIntent', 'sendBroadcast', [params]);
};

cordova.addConstructor(function() {
 window.webintent = new WebIntent();
 
 // backwards compatibility 
 window.plugins = window.plugins || {};
 window.plugins.webintent = window.webintent;
});

config.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
       Licensed to the Apache Software Foundation (ASF) under one
       or more contributor license agreements.  See the NOTICE file
       distributed with this work for additional information
       regarding copyright ownership.  The ASF licenses this file
       to you under the Apache License, Version 2.0 (the
       "License"); you may not use this file except in compliance
       with the License.  You may obtain a copy of the License at

         http://www.apache.org/licenses/LICENSE-2.0

       Unless required by applicable law or agreed to in writing,
       software distributed under the License is distributed on an
       "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
       KIND, either express or implied.  See the License for the
       specific language governing permissions and limitations
       under the License.
-->
<cordova>
    <!--
    access elements control the Android whitelist.
    Domains are assumed blocked unless set otherwise
     -->

    <access origin="http://127.0.0.1*"/> <!-- allow local pages -->

    <!-- <access origin="https://example.com" /> allow any secure requests to example.com -->
    <!-- <access origin="https://example.com" subdomains="true" /> such as above, but including subdomains, such as www -->
    <!-- <access origin=".*"/> Allow all domains, suggested development use only -->

    <log level="DEBUG"/>
    <preference name="useBrowserHistory" value="false" />
<plugins>
    <plugin name="App" value="org.apache.cordova.App"/>
    <plugin name="Geolocation" value="org.apache.cordova.GeoBroker"/>
    <plugin name="Device" value="org.apache.cordova.Device"/>
    <plugin name="Accelerometer" value="org.apache.cordova.AccelListener"/>
    <plugin name="Compass" value="org.apache.cordova.CompassListener"/>
    <plugin name="Media" value="org.apache.cordova.AudioHandler"/>
    <plugin name="Camera" value="org.apache.cordova.CameraLauncher"/>
    <plugin name="Contacts" value="org.apache.cordova.ContactManager"/>
    <plugin name="File" value="org.apache.cordova.FileUtils"/>
    <plugin name="NetworkStatus" value="org.apache.cordova.NetworkManager"/>
    <plugin name="Notification" value="org.apache.cordova.Notification"/>
    <plugin name="Storage" value="org.apache.cordova.Storage"/>
    <plugin name="Temperature" value="org.apache.cordova.TempListener"/>
    <plugin name="FileTransfer" value="org.apache.cordova.FileTransfer"/>
    <plugin name="Capture" value="org.apache.cordova.Capture"/>
    <plugin name="Battery" value="org.apache.cordova.BatteryListener"/>
    <plugin name="SplashScreen" value="org.apache.cordova.SplashScreen"/>
    <plugin name="WebIntent" value="com.borismus.webintent.WebIntent"/>
</plugins>
</cordova>

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.lkr.androidemail"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <supports-screens
        android:anyDensity="true"
        android:largeScreens="true"
        android:normalScreens="true"
        android:resizeable="true"
        android:smallScreens="true" />

    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.RECEIVE_SMS" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.WRITE_CONTACTS" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.BROADCAST_STICKY" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".EmailActivity"
            android:label="@string/title_activity_email" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
                
                
                
            </intent-filter>
        </activity>
    </application>

</manifest>

File Uploading Using Java(Servlet)

2012-08-13T00:27:00.002-07:00

index.html

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jQuery File Upload Example</title>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/themes/base/jquery-ui.css" id="theme">
<link rel="stylesheet" href="fileupload/jquery.fileupload-ui.css">
</head>
<body>
<form id="file_upload" action="upload" method="POST" enctype="multipart/form-data">
    <p id="drop_zone_1">
        <input id="file_1" type="file" name="file_1" multiple>
    </p>
    <p id="drop_zone_2">
        <input id="file_2" type="file" name="file_2" multiple>
    </p>
    <p id="drop_zone_3">
        <input id="file_3" type="file" name="file_3" multiple>
    </p>
    <button>Upload</button>
    
    <table id="files_1" style="background:yellow;"></table>
	<table id="files_2" style="background:blue;"></table>
	<table id="files_3" style="background:orange;"></table>
</form>


<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/jquery-ui.min.js"></script>
<script src="fileupload/jquery.fileupload.js"></script>
<script src="fileupload/jquery.fileupload-ui.js"></script>
<script>

/*global $ */
  $(function () {
    var initFileUpload = function (suffix) {
        $('#file_upload').fileUploadUI({
            namespace: 'file_upload_' + suffix,
            fileInputFilter: '#file_' + suffix,
            dropZone: $('#drop_zone_' + suffix),
            uploadTable: $('#files_' + suffix),
            downloadTable: $('#files_' + suffix),
            buildUploadRow: function (files, index) {
                return $('<tr><td>' + files[index].name + '<\/td>' +
                        '<td class="file_upload_progress"><div><\/div><\/td>' +
                        '<td class="file_upload_cancel">' +
                        '<button class="ui-state-default ui-corner-all" title="Cancel">' +
                        '<span class="ui-icon ui-icon-cancel">Cancel<\/span>' +
                        '<\/button><\/td><\/tr>');
            },
            buildDownloadRow: function (file) {
                return $('<tr><td>' + file.name + '<\/td><\/tr>');
            }
        });
    };
    initFileUpload(1);
    initFileUpload(2);
    initFileUpload(3);
});  
</script> 

</body>
</html>

UploadServlet.java

package com.lkr.file;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.fileupload.util.Streams;

public class UploadServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 * 
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		PrintWriter writer = response.getWriter();
		writer.write("call POST with multipart form data");
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 * 
	 */
	@SuppressWarnings("unchecked")
	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		// System.out.println("path is :::::" + request.getContextPath());
		if (!ServletFileUpload.isMultipartContent(request)) {
			throw new IllegalArgumentException(
					"Request is not multipart, please 'multipart/form-data' enctype for your form.");
		}

		ServletFileUpload uploadHandler = new ServletFileUpload(
				new DiskFileItemFactory());
		PrintWriter writer = response.getWriter();
		response.setContentType("text/plain");
		try {
			List<FileItem> items = uploadHandler.parseRequest(request);
			// System.out.println("path is:");
			for (FileItem item : items) {
				if (item.isFormField()) {
					// Normal field
					String name = item.getFieldName();
					String value = Streams.asString(item.getInputStream());
					// System.out.println("value is:" + value);
				} else {
					String filePath = "E:/BabysFirstear_Media/";
					File file; 
					if (!item.isFormField ()) {
				        String fieldName = item.getFieldName();
				        String fileName = item.getName();
				        if (fileName == "")
				        	System.out.println("You forgot to choose a file.");
				        boolean isInMemory = item.isInMemory();
				        long sizeInBytes = item.getSize();
				        if( fileName.lastIndexOf("\\") >= 0 ) {
				          file = new File(filePath + fileName.substring(fileName.lastIndexOf("\\")));
				        } else { 
				          file = new File(filePath + fileName.substring(fileName.lastIndexOf("\\")+1));
				        }
				        item.write(file) ;
				        System.out.println("Uploaded Filename: " + filePath + fileName + ", sizeInBytes = " + sizeInBytes);
				      }
					
					
										
						
						  System.out.println("item name is:::" +
						  item.getName()); //item.write(file);
						  writer.write("{\"name\":\"" + item.getName() +
						  "\",\"type\":\"" + item.getContentType() +
						  "\",\"size\":\"" + item.getSize() + "\"}"); break; // assume we only get one file at a time
						 
				}
			}

		} catch (FileUploadException e) {
			throw new RuntimeException(e);
		} catch (Exception e) {
			throw new RuntimeException(e);
		} finally {
			writer.close();

		}

	}

}

web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
	<display-name>Struts 2 Web Application</display-name>
	<servlet>
		<servlet-name>UploadServlet</servlet-name>
		<servlet-class>com.lkr.file.UploadServlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>UploadServlet</servlet-name>
		<url-pattern>/upload</url-pattern>
	</servlet-mapping>


	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>



</web-app>

Eclipse: Writing Better, Faster Java Documentation

2012-06-15T02:29:00.001-07:00

JAutodoc:

I've started using JAutodoc, which is an Eclipse plugin for automatically adding Javadoc to your source code. It helps generate the initial Javadoc for methods which don't have them and can even complete existing Javadoc by adding missing parameters and return types. I have found this plugin very useful in writing documentation fast.

Let's say you have the following method which adds two ints:

public int add(int x, int y) {
    return x + y;
}

To invoke JAutodoc, all you have to do is hit Ctrl+Alt+J inside the method and the following Javadoc template will be automatically generated, which you can then complete.

/**
 * Adds the.
 *
 * @param x the x
 * @param y the y
 * @return the int
 */
public int add(int x, int y) {
    return x + y;
}

Later on, if you decide to change this method by adding another parameter to it, you can press Ctrl+Alt+J again and JAutoDoc will add the new parameter to the Javadoc but leave the rest of it unchanged.

Enabling Eclipse Javadoc warnings:
I've also found it useful to turn on Eclipse warnings for missing or malformed Javadoc comments. You can do this by going to Window > Preferences and then selecting Java > Compiler > Javadoc. Tick the box for processing Javadoc comments and select your desired severity levels. I've got mine set to Warnings for everything.

Difference between String and StringBuffer Class

2012-06-15T02:08:00.001-07:00

Java provides the StringBuffer and String classes, and the String class is used to manipulate character strings that cannot be changed. Simply stated, objects of type String are read only and immutable. The StringBuffer class is used to represent characters that can be modified.

The significant performance difference between these two classes is that StringBuffer is faster than String when performing simple concatenations. In String manipulation code, character strings are routinely concatenated. Using the String class, concatenations are typically performed as follows:

String str = new String ("Konda");
str += "Reddy!!";

If you were to use StringBuffer to perform the same concatenation, you would need code that looks like this:

StringBuffer str = new StringBuffer ("Konda ");
str.append("Reddy!!");

Programmers usually assume that the first example above is more efficient (Just like me before some days !!!) because they think that the second example, which uses the append method for concatenation, is more costly than the first example, which uses the + operator to concatenate two String objects.
The + operator appears innocent, but the code generated produces some surprises. Using a StringBuffer for concatenation can in fact produce code that is significantly faster than using a String. To discover why this is the case, we must examine the generated bytecode from our two examples. The bytecode for the example using String looks like this:

0 new #7
3 dup
4 ldc #2
6 invokespecial #12
9 astore_1
10 new #8
13 dup
14 aload_1
15 invokestatic #23
18 invokespecial #13
21 ldc #1
23 invokevirtual #15
26 invokevirtual #22
29 astore_1

The bytecode at locations 0 through 9 is executed for the first line of code, namely:

String str = new String("Konda ");

Then, the bytecode at location 10 through 29 is executed for the concatenation:

str += "Reddy!!";

          Things get interesting here. The bytecode generated for the concatenation creates a StringBuilder object, then invokes its append method: the temporary StringBuilder object is created at location 10, and its append method is called at location 23. Because the String class is immutable, a StringBuilder must be used for concatenation.

          After the concatenation is performed on the StringBuilder object, it must be converted back into a String. This is done with the call to the toString method at location 26. This method creates a new String object from the temporary StringBuilder object. The creation of this temporary StringBuilder object and its subsequent conversion back into a String object are very expensive.

In summary, the two lines of code above result in the creation of three objects:

A String object at location 0
A StringBuilder object at location 10
A String object at location 26

Now, let’s look at the bytecode generated for the example using StringBuffer:

0 new #8
3 dup
4 ldc #2
6 invokespecial #13
9 astore_1
10 aload_1
11 ldc #1
13 invokevirtual #15
16 pop

The bytecode at locations 0 to 9 is executed for the first line of code:

StringBuffer str = new StringBuffer(“Konda “);

The bytecode at location 10 to 16 is then executed for the concatenation:

str.append("Reddy!!");

Notice that, as is the case in the first example, this code invokes the append method of a StringBuffer object. Unlike the first example, however, there is no need to create a temporary StringBuilder and then convert it into a String object. This code creates only one object, the StringBuffer, at location 0.

In conclusion, StringBuffer concatenation is significantly faster than String concatenation. Obviously, StringBuffers should be used in this type of operation when possible. If the functionality of the String class is desired, consider using a StringBuffer for concatenation and then performing one conversion to String.

I found this useful piece of information in sun website…

Hibernate Caching Tutorial

2012-06-15T00:03:00.001-07:00

(1) Why Need ?

          While working with Hibernate web applications we will face so many problems in its performance due to database traffic. That to when the database traffic is very heavy . Actually hibernate is well used just because of its high performance only. So some techniques are necessary to maintain its performance. Caching is the best technique to solve this problem. In this article we will discuss about, how we can improve the performance of Hibernate web applications using caching.

          The performance of Hibernate web applications is improved using caching by optimizing the database applications. The cache actually stores the data already loaded from the database, so that the traffic between our application and the database will be reduced when the application want to access that data again. Maximum the application will works with the data in the cache only. Whenever some another data is needed, the database will be accessed. Because the time needed to access the database is more when compared with the time needed to access the cache. So obviously the access time and traffic will be reduced between the application and the database. Here the cache stores only the data related to current running application. In order to do that, the cache must be cleared time to time whenever the applications are changing.

          Hibernate uses two different caches for objects: first-level cache and second-level cache..

1.1) First-level cache

          First-level cache always Associates with the Session object. Hibernate uses this cache by default. Here, it processes one transaction after another one, means wont process one transaction many times. Mainly it reduces the number of SQL queries it needs to generate within a given transaction. That is instead of updating after every modification done in the transaction, it updates the transaction only at the end of the transaction.

1.2) Second-level cache

          Second-level cache always associates with the Session Factory object. While running the transactions, in between it loads the objects at the Session Factory level, so that those objects will available to the entire application, don’t bounds to single user. Since the objects are already loaded in the cache, whenever an object is returned by the query, at that time no need to go for a database transaction. In this way the second level cache works. Here we can use query level cache also. Later we will discuss about it.

(2) Way to Implement It

          Hibernate supports four open-source cache implementations named EHCache (Easy Hibernate Cache), OSCache (Open Symphony Cache), Swarm Cache, and JBoss Tree Cache. Each cache has different performance, memory use, and configuration possibilities.

2.1) 2.1 EHCache (Easy Hibernate Cache) (org.hibernate.cache.EhCacheProvider)

It is fast.
lightweight.
Easy-to-use.
Supports read-only and read/write caching.
Supports memory-based and disk-based caching.

Does not support clustering.

2.2)OSCache (Open Symphony Cache) (org.hibernate.cache.OSCacheProvider)

It is a powerful .
flexible package
supports read-only and read/write caching.
Supports memory- based and disk-based caching.
Provides basic support for clustering via either JavaGroups or JMS.

2.3)SwarmCache (org.hibernate.cache.SwarmCacheProvider)

is a cluster-based caching.
supports read-only or nonstrict read/write caching .
appropriate for applications those have more read operations than write operations.

2.4)JBoss TreeCache (org.hibernate.cache.TreeCacheProvider)

is a powerful replicated and transactional cache.

useful when we need a true transaction-capable caching architecture .

(3) Caching Strateties
Important thing to remembered while studying this one is none of the cache providers support all of the cache concurrency strategies.

3.1) Read-only

Useful for data that is read frequently but never updated.
It is Simple .
Best performer among the all.

Advantage if this one is, It is safe for using in a cluster. Here is an example for using the read-only cache strategy.

<class name="abc.mutable " mutable="true ">
<cache usage="read-only"/>

</class>

3.2) Read-Write

Used when our data needs to be updated.
It’s having more overhead than read-only caches.
When Session.close() or Session.disconnect() is called the transaction should be completed in an environment where JTA is no used.
It is never used if serializable transaction isolation level is required.
In a JTA environment, for obtaining the JTA TransactionManager we must specify the property hibernate.transaction.manager_lookup_class.
To use it in a cluster the cache implementation must support locking.

Here is an example for using the read-write cache stringategy.

<class name="abc.xyz" .... >
<cache usage="read-write"/>
….
<set name="yuv" ... >
<cache usage="read-write"/>
….
</set>
</class>

3.3) Nonstrict read-write

Needed if the application needs to update data rarely.
we must specify hibernate.transaction.manager_lookup_class to use this in a JTA environment .
The transaction is completed when Session.close() or Session.disconnect() is called In other environments (except JTA) .

Here is an example for using the nonstrict read-write cache stringategy.

                                      
<class name="abc.xyz" .... >
<cache usage=" nonstringict-read-write"/>
….
</class>

3.4) Transactional

It supports only transactional cache providers such as JBoss TreeCache.
only used in JTA environment.

(4) Configuration
For configuring cache the hibernate.cfg.xml file is used. A typical configuration file is shown below.

<hibernate-configuration>
        <session-factory>
               ...
               <property name="hibernate.cache.provider_class">
                       org.hibernate.cache.EHCacheProvider
               </property>
               ...
        </session-factory>
</hibernate-configuration>

The name in <property> tag must be hibernate.cache.provider_class for activating second-level cache. We can use hibernate.cache.use_second_level_cache property, which allows you to activate and deactivate the second-level cache. By default, the second-level cache is activated and uses the EHCache.
(5) Advantages

5.1) Performance

Hibernate provides some metrics for measuring the performance of caching, which are all described in the Statistics interface API, in three categories:

Metrics related to the general Session usage.
Metrics related to the entities, collections, queries, and cache as a whole.
Detailed metrics related to a particular entity, collection, query or cache region.

5.2) About Caching

All objects those are passed to methods save(), update() or saveOrUpdate() or those you get from load(), get(), list(), iterate() or scroll() will be saved into cache.
flush() is used to synchronize the object with database and evict() is used to delete it from cache.
contains() used to find whether the object belongs to the cache or not.
Session.clear() used to delete all objects from the cache .
Suppose the query wants to force a refresh of its query cache region, we should call Query.setCacheMode(CacheMode.REFRESH).

(6) Conclusion
Caching is good one and hibernate found a good way to implement it for improving its performance in web applications especially when more database traffic occurs. If we implement it very correctly, we will get our applications to be running at their maximum capacities. I will cover more about the caching implementations in my coming articles. Try to get full coding guidelines before going to implement this.

Red5 Streaming

2012-06-10T21:22:00.004-07:00

How to install Red5 Streaming server in windows7
Here I am showing Red5 installation with step by steps

1) First download the Red5 executable file from the official Red5 server, here I downloaded Red5 0.8 version

2) Then go to that file location install that file , here I show some installation steps

3) After finishing installation Restart the system(not mandatory) and open the browser . in browser type http://localhost:5080

4) And then press enter it will show the following image, if it not showed check weather your server is running or not

5) And then install some demo applications

6) Here I am installing oflaDemo application

7) After installing the oflaDemo application type the following url in browser http://localhost:5080/demos/

8) Here you will find out the all applications , go to the oflaDemo application and click view demo link

9) When you click the view demo link it will open the following window

10) The click the connect button

11) Here observe yellow color changed to green color that means your demo application is successfully installed

12) Then finally see the preinstalled video’s in the oflaDemo application

13) That’s it you are successfully installed Red5 Server in your system

Then you want to publish any stream from red5 server type the following url http://localhost:5080/demos/publisher.html the following window will be opened.

And then choose your camera for video and choose your audio device for audio… then click the connect button . here I don’t have webcam and headset for that I am not connecting….

Then go to the video tab and choose your video and audio devices

Then go to the publish tab give the name what do u want for your stream, this name will be used to display the stream in your browser

And then click the publish button, that’s it you successfully published rtmp stream with your stream name,

Getting the above rtmp stream in web application

Here I am using struts2 application for that am displaying this rtmp stream in a jsp page,

The jsp page will be look like this

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

pageEncoding="ISO-8859-1"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<%@ taglib uri="/struts-tags" prefix="s"%>

<html>

<head>

<title>Insert title here</title>

</script>

</head>

<body>

<div>

Unfortunately you don't have Adobe Flash-Player....

<a href="http://get.adobe.com/flashplayer/">Click Here to get the Adobe Flash-Player.</a>

</div><script type="text/javascript">

var flashvars = {

file:your stream name,

streamer:'rtmp://localhost/oflaDemo/',

bufferlength:'2',

backcolor:'#000000',

frontcolor:'#166EBA',

screencolor:'#999999',

lightcolor:'#990000',

autostart:'true',

repeat:'none',

stretching:'',

playlist:'bottom',

playlistsize:'160',

};

var params = { allowfullscreen:'true', allowscriptaccess:'always', wmode:'transparent' };

var attributes = { id:'player1', name:'player1' };

swfobject.embedSWF('player.swf','player','384','468','9.0.0','false',flashvars, params, attributes);

</script>

</div>

</body>

</html>

HTML5 video tag in my Phone gap Android application

2012-06-10T21:17:00.002-07:00

Here I am successfully running HTML5 <video> tag in my Phone gap Android application…

First thing here I succeeded in Android 3.2 version

There are two ways for running video by using <video> tag

1) By using StrobeMediaPlayer

2) Without any Player

1) Using StrobeMediaPlayer

For that I followed these steps.

1) Download the StrobeMediaPlayer from the internet

2) Findout the lib folder in ur downloaded zip file, that lib folder contains two folders (jquery , jscolor) and required js and css files

3) Then add the lib folder in ur www folder

Required js files:

1)Profiles.js(Required)

2)devicedetection.js(Required)

3)jquery-1.5.1.min.js(Required)

4)jquery-ui-1.8.14.custom.min.js(optional) it displays video time

5)jquery.strobemediaplaybackhtml5.js(Required)

6)StrobeMediaPlayer.js(Required)

index.html

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Device Detection Test</title>
<style type="text/css">
body {
 font-family: sans-serif;
}

.movie {
 width: 100%;
 clear: both;
}

.movie div.thumb {
 float: left;
 margin-right: 10px;
 cursor: pointer;
 border: solid 1px blue;
}

.movie div.details {
 width: 100%;
 height: 100%;
}

.movie div.details p.title {
 font-weight: bold;
 cursor: pointer;
}

.movie div.details p.desc {
 font-weight: normal;
}
</style>
<link type="text/css" rel="stylesheet"
 href="lib/jquery.strobemediaplaybackhtml5.css" />

<script type="text/javascript" src="lib/profiles.js"></script>
<script type="text/javascript" src="lib/devicedetection.js"></script>
<script type="text/javascript" src="lib/jquery/jquery-1.5.1.min.js"></script>
<script type="text/javascript" src="lib/jquery-ui-1.8.14.custom.min.js"></script>
<script type="text/javascript"
 src="lib/jquery.strobemediaplaybackhtml5.js"></script>
<script type="text/javascript" src="lib/StrobeMediaPlayer.js"></script>
<script>
 var movies = [
   {
    "flashvars" : {
     "poster" : "http://www.osmf.org/dev/1.6gm/images/poster1.png",
     "src" : "http://players.edgesuite.net/videos/big_buck_bunny/bbb_448x252.mp4"
    },
    "element" : "clipContainer0"
   }, ];
 $(function() {
  for (i = 0; i < movies.length; i++) {
   strobeMediaPlayback.flashvars(movies[i]["flashvars"]);
   strobeMediaPlayback.draw(movies[i]["element"]);
  }
 });
</script>
</head>
<body>
 <div>Strobe Media Playback</div>
 <div id="movie0" class="movie">
  <div class="thumb">
   <div id="clipContainer0"></div>
  </div>
  <div class="details">
   <p class="title">Video One</p>
   <p class="desc">Video one description.</p>
  </div>
 </div>

</body>
</html>

----------------------END OF index.html --------------------

Then add these two classes in your source folder

package com.phonegap.plugins.aVideo;

import org.json.JSONArray;
import org.json.JSONException;
import vPlayer.VideoPlayer;
import android.content.Intent;
import android.util.Log;
import com.phonegap.api.Plugin;
import com.phonegap.api.PluginResult;

public class AVideo extends Plugin {

    /**
     * Executes the request and returns PluginResult.
     *
     * @param action        The action to execute.
     * @param args          JSONArry of arguments for the plugin.
     * @param callbackId    The callback id used when calling back into JavaScript.
     * @return              A PluginResult object with a status and message.
     */
    public PluginResult execute(String action, JSONArray args, String callbackId) {
        PluginResult.Status status = PluginResult.Status.OK;
        String result = "";

        try {
            if (action.equals("showVideo")) {
                result = this.showVideo(args.getString(0));
                if (result.length() > 0) {
                    status = PluginResult.Status.ERROR;
                }
            }
            return new PluginResult(status, result);
        } catch (JSONException e) {
            return new PluginResult(PluginResult.Status.JSON_EXCEPTION);
        }
    }

    /**
     * Identifies if action to be executed returns a value and should be run synchronously.
     *
     * @param action    The action to execute
     * @return          T=returns value
     */
    public boolean isSynch(String action) {
        return false;
    }

    /**
     * Called by AccelBroker when listener is to be shut down.
     * Stop listener.
     */
    public void onDestroy() {
    }

    //--------------------------------------------------------------------------
    // LOCAL METHODS
    //--------------------------------------------------------------------------

    /**
     * Display a video with the specified name.
     *
     * @param videoName     The video to load.
     * @return              "" if ok, or error message.
     */
    public String showVideo(String videoName) {
     Log.d("logicmax", videoName);
     try {
            Intent intent = null;
                intent = new Intent().setClass(this.ctx, VideoPlayer.class);
               
                intent.putExtra("Nme", videoName);
                
            this.ctx.startActivity(intent);
            return "";
        } catch (android.content.ActivityNotFoundException e) {
            Log.d("logicmax","error");
         return e.toString();
            
        }
    }

}

--------------------------END OF AVIDEO.JAVA-----------------------

package vPlayer;

import nl.webkrackt.test.R;
import android.app.Activity;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Window;
import android.view.WindowManager;
import android.widget.MediaController;
import android.widget.VideoView;


public class VideoPlayer extends Activity implements   MediaPlayer.OnErrorListener, MediaPlayer.OnCompletionListener {
  private VideoView mVideoView;
  private String Chemin;
  private int videoPosition;
  
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
   
  requestWindowFeature(Window.FEATURE_NO_TITLE);
  getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
  getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
  
  setContentView(R.layout.lv);
  mVideoView = (VideoView)findViewById(R.id.videoView);
     mVideoView.setOnErrorListener(this);
     mVideoView.setOnCompletionListener(this);

        Bundle returnData = (Bundle) getLastNonConfigurationInstance();
     if (returnData == null) {
      Bundle Params = getIntent().getExtras ();
      String pth = Params.getString("Nme");
      if(pth!=null)
       Chemin = "android.resource://"+getPackageName() +"/raw/" + pth;
      else
       finish();
       
       MediaController mediaController = new MediaController(this);
       mediaController.setAnchorView(mVideoView);
       mVideoView.setVideoURI(Uri.parse(Chemin));
       mVideoView.setMediaController(mediaController);
       mVideoView.requestFocus();
       //mVideoView.start();
     
     }
     else
     {
             Chemin = returnData.getString("LOCATION");
             videoPosition = returnData.getInt("POSITION");
             MediaController mediaController = new MediaController(this);
             mediaController.setAnchorView(mVideoView);          
       mVideoView.setMediaController(mediaController);
             mVideoView.setVideoURI(Uri.parse(Chemin));
             mVideoView.seekTo(videoPosition);
             
     }
 }
 @Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
     if (keyCode == KeyEvent.KEYCODE_BACK ) {
         finish();
         return true;
     }
     return super.onKeyDown(keyCode, event);
 }


 @Override
 protected void onPause() {
  super.onPause();

  if (mVideoView!=null) {
    synchronized (mVideoView) {
     mVideoView.pause();     
   }
   
  }
  
 }
  @Override
  protected void onResume() {
   super.onResume();

   if (mVideoView!=null) {
     synchronized (mVideoView) {
      mVideoView.start();  
      setVisible(true);      
    }
    
   }

  
 }
  @Override
     public Object onRetainNonConfigurationInstance() {         
         videoPosition = mVideoView.getCurrentPosition();
         Bundle data = new Bundle();
         data.putString("LOCATION", Chemin);
         data.putInt("POSITION", videoPosition);
         return data;
     }
  
  @Override
  protected void onSaveInstanceState(Bundle outState) {
   super.onSaveInstanceState(outState);
    videoPosition = mVideoView.getCurrentPosition();
          Bundle data = new Bundle();
          data.putString("LOCATION", Chemin);
          data.putInt("POSITION", videoPosition);
  }
  
     public boolean onError(MediaPlayer player, int arg1, int arg2) {         
         finish();
         return false;
     }
  public void onCompletion(MediaPlayer mp) {
      finish();
  }
}

-------------------*END OF VIDEOPLAYER.JAVA*--------------------

Then add these two line in your Activity class after the super.loadUrl();

WebSettings settings = appView.getSettings();

settings.setPluginState(PluginState.ON);

4)Copy the below code and paste in StrobeMediaPlayer.js

var strobeMediaPlayback = function () {
 alert("StrobeMediaPlayBack first");
 var settings = {
  "tablet": {
   "startSize": {"width":480, "height":268},
   "wmode": "direct"
  },
  "smartphone": {
   "startSize": {"width":120, "height":67},
   "wmode": "direct"
  },
  "default": {
   "startSize": {"width":480, "height":268},
   "wmode": "direct"
  }
 };
 
 var flashvars = {};
 
 function getSettingByDeviceType(setting, deviceType, defaultValue) {
  if (deviceType in settings) {
   return (settings[deviceType][setting] ? settings[deviceType][setting] : defaultValue);
  }
  else {
   return (settings["default"][setting] ? settings["default"][setting] : defaultValue);
  }
 }
 
 return { 
  settings: function(object) {
   settings = $.extend(true, settings, object);
  },
  flashvars: function(object) {
   flashvars = $.extend(true, flashvars, object);
  },
  draw: function(element) {
   if (element && flashvars && flashvars["src"]) {
    var agent = window.location.hash.replace(/^#/, "");

    function onDeviceDetection(device) {
     var startSize = getSettingByDeviceType("startSize", device.getProfile().type, "");
  var html5divs = '<div class="html5player">' + '<div class="errorwindow"></div>' +'<div class="controls">' +'<div class="icon playtoggle">Play/Pause</div>' +'<div class="timestamp current">0:00</div>' +'<div class="progress">' +'<a class="slider"></a>' +'<div class="tracks">' +'<div class="seeking"></div>' +  '<div class="played"></div>' +'<div class="buffered"></div>' + '</div>' +'</div>' +'<div class="timestamp duration">0:00</div>' +'<div class="icon fullview">Full View</div>' +'</div>' +'<video width="500" height="400" preload="none" poster="' + flashvars["poster"] + '">' +'<source src="http://players.edgesuite.net/videos/big_buck_bunny/bbb_448x252.mp4" />' +'</video>'+ '</div>';

$("#" + element).html(html5divs);
$("#" + element + " .html5player").strobemediaplaybackhtml5();
  }
new DeviceDetection(agent).addCallback(onDeviceDetection).addProfiles(profiles).detect();
   }
  }
 }
}();

---------------------END OF StrobeMediaPlayer.js---------------------------

5)AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="nl.webkrackt.test"
    android:versionCode="1"
    android:versionName="1.0" >
    
    <supports-screens
                android:largeScreens="true"
                android:normalScreens="true"
                android:smallScreens="true"
                android:resizeable="true"
                android:anyDensity="true"
                />
        <uses-permission android:name="android.permission.CAMERA" />
        <uses-permission android:name="android.permission.VIBRATE" />
        <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
        <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
        <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
        <uses-permission android:name="android.permission.READ_PHONE_STATE" />
        <uses-permission android:name="android.permission.INTERNET" />
        <uses-permission android:name="android.permission.RECEIVE_SMS" />
        <uses-permission android:name="android.permission.RECORD_AUDIO" />
        <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
        <uses-permission android:name="android.permission.READ_CONTACTS" />
        <uses-permission android:name="android.permission.WRITE_CONTACTS" />   
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />  
        <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <uses-sdk android:minSdkVersion="7" />

    <application android:icon="@drawable/icon"
        android:label="@string/app_name"
        android:hardwareAccelerated="true" >
        <activity
            android:name=".VideoTestActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.phonegap.DroidGap" android:label="@string/app_name"
   android:configChanges="orientation|keyboardHidden" >
   <intent-filter>
   </intent-filter>
  </activity>
  <activity android:name="vPlayer.VideoPlayer" android:label="@string/app_name"></activity>
    </application>

</manifest>

-------------------END OF ANDROIDMANIFEST.XML-------------------------

Observe above xml file addded android:hardwareAccelerated="true" attribute in ur < application> tag

1) Without any Player

Here I don’t want to use any player for running html5 video tag for that I do the following steps

1)change the androidManifest.xml file

a) In androidManifest.xml file i added the android:hardwareAccelerated=”true” for <application> tag

b) Added code for doing PluginState True in Java file

The following code is added in java file after the super.loadUrl();

WebSettings settings = appView.getSettings();

settings.setPluginState(PluginState.ON);

Enable the query cache in MySQL to improve performance

2012-06-08T06:02:00.001-07:00

If you want to get optimized and speedy response from your MySQL server then you need to add following two configurations directive to your MySQL server:
query_cache_size=SIZE
The amount of memory (SIZE) allocated for caching query results. The default value is 0, which disables the query cache.
query_cache_type=OPTION
Set the query cache type. Possible options are as follows:
0 : Don't cache results in or retrieve results from the query cache.
1 : Cache all query results except for those that begin with SELECT S_NO_CACHE.
2 : Cache results only for queries that begin with SELECT SQL_CACHE

Howto enable caching in MySQL

You can setup caching as follows:
$ mysql -u root –p
Output:

Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 16 to server version: 4.1.15-Debian_1-log
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql>

Now setup cache size 16Mb:

mysql> SET GLOBAL query_cache_size = 16777216;

Query OK, 0 rows affected (0.00 sec)

mysql> SHOW VARIABLES LIKE 'query_cache_size';

Output:

 +------------------+----------+
| Variable_name    | Value    |
+------------------+----------+
| query_cache_size | 16777216 |
+------------------+----------+

You can setup them in /etc/my.cnf (Red Hat) or /etc/mysql/my.cnf (Debian) file:
# vi /etc/my.cnf
Append config directives as follows:

query_cache_size = 268435456
query_cache_type=1
query_cache_limit=1048576

In above example the maximum size of individual query results that can be cached set to 1048576 using query_cache_limit system variable. Memory size in Kb.

How to stream audio and video media online on a shoe-string budget

2012-05-13T23:11:00.000-07:00

             There are many ways that one can stream audio and video materials online and we found a few ways that are cost effective and efficient enough to handle most of the online streaming activities.

             Here we list some of the technologies that we used to put together a system that may help anyone with their audio and vide streaming needs with a low or no budget. It will take some time, reading/researching and effort to accomplish it. We will describe briefly how we accomplished our goal of setting up a system on a shoe string budget. You may be able to extract a few ideas/points and build or come up with your own way of doing the same thing. It is possible to accomplish anything nowadays, as long as the Internet and Google is there.

             The main system we have is a Pentium IV with 512MB RAM memory and 40GB hard drive. We have DSL high-speed connection to the Internet. The system runs on ubuntu Linux operating system (almost all the software that we have used will run on Windows based system as well but MS Windows costs). In this system we have three streaming servers like “Shoutcast”, “Darwin” and “Red5” running at the same time (it is our test server, gets abused a lot). All these streaming servers are capable of streaming audio and/or video media effectively. The difference is mainly the format they use to broadcast the video signal.

             Shoutcast server from www.shoutcast.com/ works with “NSV” (Nullsoft video) format.
Darwin streaming server from www.apple.com is for QuickTime and mpeg movies (“mov” & “mp4”). Red5 server http://osflash.org/red5 works with flash (“flv”) videos. On the audio side all these servers can stream mp3 files without any problem.

             Depending on the need, a particular combination of the above can serve in any situation. For example a radio broadcasting station is possible with the following combination.

             A Linux (or Windows) based computer system with a decent hardware specification as mentioned above running the Shoutcast streaming server as the main system. A Windows 2000 or XP system with software like Winamp player with necessary plug-in is all what is needed to setup a powerful radio broadcasting system. Can say that this is the installation of this setup is the easiest of all.

                 This Windows based system should have a working sound card. Adding and automation software like “Zarasoft” (no cost of course) can even automate the radio station when and if the DJ is missing. Call-in talk shows are possible with a phone system integrated into this setup. This option will need a little more homework and work.

                 If your need is to stream QuickTime or mpeg movies then the same Linux (or Windows) system with Darwin streaming server will be a good choice. Darwin streaming server is as same as the Apple’s commercial product QuickTime streaming server but available for free from Apple’s website. Installing it and getting it up and running is not very difficult. A web based admin tool is available to manage the playlist files and other streaming media.

                  Flash has a big advantage over the others. Mainly, according to some Internet source 98% of the web browsers are installed with flash plug-in to play flash videos. It is a popular choice for many including movie producers for their online movie trailer streaming. The open source flash software “Red5” is equivalent to Adobe’s commercial software Flash Communication server. The combination Linux and Red5 (all for free of charge) has a few other features that are desirable in certain situation such as audio or video chat systems for an example.

                  All these combinations are capable of streaming real time events if needed. For fun and testing purposes we stream live local TV channels over the Internet for our friends who live in other countries. That is, with a second Windows based source computer equipped with a TV tuner which connected to the cable TV and to the main streaming server on the LAN (Local Area Network), this can be easily achieved.

                   The Linux operating system comes with a web server (Apache) and servers like MySQL and PHP software. With these amazing tools the audio and video streaming can be integrated into a website. This website can optionally hosted out side your home or office with an ISP (Internet Service Provider).

                   We may have spent less than $200 for the setup with all the combinations mentioned here. It took us about 3hours to finish the whole setup (took us 6-8 months initially to learn and reach this point). All the software, that is the OS, the streaming server software, the web server software, sourcing software with appropriate plug-ins, the automation software, weather watcher/announcement software, audio editing software like “Audacity”, video encoding software like “Super” and screen casting (screen capture) software such “Camstudio” and Wink2 were all obtained for free. Thus we built our audio and video streaming system that streams online on a shoe-string budget.
Our “audio and video streaming online – beginner’s guide” is available at www.aduioandvideostreaming.com has little more information on the “ubuntu Linux/Shoutcast” combination. Have a look at the overview to get an idea of the ebook contents along with couple of video tutorials.
Thank you.

Core Java Questions with answers

2012-05-10T21:17:00.000-07:00

1)What is the purpose of serialization?
Answer: Serialization is the conversion of an object to a series of bytes, so that the object can be easily saved to persistent storage or streamed across a communication link. The byte stream can then be deserialised – converted into a replica of the original object.
Source | Example
2)What is the difference between JDK and JRE?
Answer: Java Development Kit (JDK) is the most widely used Java Software Development Kit. Java Runtime Environment (JRE) is an implementation of the Java Virtual Machine which executes Java programs.
Source | JDK Wiki | JVM Wiki
3)What is the difference between equals() and “==” ?
Answer: Equals is intended to check logical equality and == checks if both references point to same object. (Thanks Sandeep)

a == b;        // Compares references, not values.
a.equals(b);  // Compares values for equality.

Source

4)When will you use Comparator and Comparable interfaces?

Answer: java.util.Comparator and java.lang.Comparable java.util.Comparator compares some other class’s instances, while java.lang.Comparable compares itself with another object.
Source | Example

5)What is the wait/notify mechanism?

Answer: This deals with concurrent programming. The wait() and notify() methods are designed to provide a mechanism to allow a thread to be block until a specific condition is met.
However, java.util.concurrent should be used instead of wait() and notify() to reduce complexity.
Source | Java API | Java Technical Article

6)What is the difference between checked and unchecked exceptions?

Answer:
In general, unchecked exceptions represent defects in the program (bugs), which are normally Runtime exceptions.
Furthermore, checked exceptions represent invalid conditions in areas outside the immediate control of the program.
Source

7)What is the difference between final, finally and finalize?

Answer: “final” is the keyword to declare a constant AND prevents a class from producing subclasses. (Thanks Tom Ellis)
“finally” is a block of code that always executes when the try block is finished, unless System.exit() was called. finalize() is an method that is invoked before an object is discarded by the garbage collector.
Source | Final Usage |Finally Usage | Finalize()

8)What is the difference between web server and app server?

Answer: A Web server exclusively handles HTTP requests, whereas an application server serves business logic to application programs through any number of protocols.
Source

9)Explain the Struts1/Struts2/MVC application architecture?

Answer: Struts was adopted by the Java developer community as a default web framework for developing web applications
The MVC(Model–view–controller) an application that consist of three distinct parts. The problem domain is represented by the Model. The output to the user is represented by the View. And, the input from the user is represented by Controller.
Source

10)What is the difference between forward and sendredirect?

Answer: Both method calls redirect you to new resource/page/servlet. The difference between the two is that sendRedirect always sends a header back to the client/browser, containing the data in which you wanted to be redirected.
Source

11)How does a 3 tier application differ from a 2 tier one?

Answer: Tiers are the physical units of separation or deployment, while layers are the logical units of separation.
Imagine that you’re designing an e-commerce website. A 3 tier architecture would consist of web pages, a web server and a database, with the corresponding 3 layers being the “Presentation”, “Business Logic” and “Database” layers.
If you take the database tier and layer out then your have a 2 tier architecture.
Source

12)How does the version control process works?

Answer: Initiate, pull, branch, merge, commit, push.
(Init) Make your own repository. (Pull) Download an existing repository from a url. (Branch / Merge )Make revisions. Commit then push your modifications.

13)What is the difference between JAR and WAR files?

Answer: JAR files (Java ARchive) allows aggregating many files into one, it is usually used to hold Java classes in a library.
WAR files (Web Application aRchive) stores XML, java classes, and JavaServer pages for Web Application purposes.
Source

14)What is a Left outer join?

Answer: This deals with SQL. Left outer join preserves the unmatched rows from the first (left) table, joining them with a NULL row in the shape of the second (right) table.
Source | Joins Wiki

15)What is the difference between UNION and UNION ALL?

Answer: This deals with SQL. UNION only selects distinct values, UNION ALL selects all values.
Source | Example

Tuning Performance of Java Web Application

2012-04-25T21:11:00.000-07:00

Best Practices to improve performance in Servlets

1. Use init() method to cache static data
2. Use StringBuffer/StringBuilder rather than using + operator when you concatenate multiple strings
3. Use print() method rather than println() method
4. Use ServletOutputStream rather than PrintWriter to send binary data
5. Initialize the PrintWriter with proper size
6. Flush the data partly
7. Minimize code in the synchronized block
8. Set the content length
9. Release resources in destroy() method.
10. Implement getLastModified() method to use browser cache and server cache
11. Use application server caching facility
12. Use Mixed session mechanisms such as HttpSession with hidden fields
13. Remove HttpSession objects explicitly in your program whenever you finish the task
14. Reduce session time out value as much as possible
15. Use 'transient' variables to reduce serialization overhead if your HttpSession tracking mechanism uses serialization process.
16. Disable servlet auto reloading feature.
17. Use thread pool for your servlet engine and define the size as per application requirement.

Best Practices to improve Performance in JSP
1. Use jspInit() method to cache static data
2. Use StringBuffer rather than using + operator when you concatenate multiple strings
3. Use print() method rather than println() method
4. Use ServletOutputStream instead of JSPWriter to send binary data
5. Initialize the 'out' object (implicit object) with proper size in the page directive.
6. Flush the data partly
7. Minimize code in the synchronized block
8. Set the content length
9. Release resources in jspDestroy() method.
10. Give 'false' value to the session in the page directive to avoid session object creation.
11. Use include directive instead of include action when you want to include the child page content in the translation phase.
12. Avoid giving unnecessary scope in the 'useBean' action.
13. Do not use custom tags if you do not have reusability.
14. Use application server caching facility
15. Use Mixed session mechanisms such as 'session' with hidden fields
16. Use 'session' and 'application' as cache.
17. Use caching tags provided by different organizations like openSymphony.com
18. Remove 'session' objects explicitly in your program whenever you finish the task
19. Reduce session time out value as much as possible
20. Use 'transient' variables to reduce serialization overhead if your session tracking mechanism uses serialization process.
21. Disable JSP auto reloading feature.
22. Use thread pool for your JSP engine and define the size of thread pool as per application requirement.

Best practices to improve performance in JDBC

1. Get database connection from connection pool rather than getting it directly
2. Use batch transactions.
3. Choose right isolation level as per your requirement. TRANSACTION_READ_UNCOMMITED gives best performance for concurrent transaction based applications. TRANSACTION_NONE gives best performance for non-concurrent transaction based applications.
4. Your database server may not support all isolation levels, be aware of your database server features.
5. Use PreparedStatement when you execute the same statement more than once.
6. Use CallableStatement when you want result from multiple and complex statements for a single request.
7. Use batch update facility available in Statements.
8. Use batch retrieval facility available in Statements or ResultSet.
9. Set up proper direction for processing rows.
10. Use proper getXXX () methods.
11. Close ResultSet, Statement and Connection whenever you finish your work with them.
12. Write precise SQL queries.
13. Cache read-only and read-mostly tables data.

Performance improvement techniques in Object creation

1. Avoid creating objects in a loop.
2. Use String literals instead of String objects (created using the 'new' keyword) if the content is same.
3. Whenever you are done with an object make that reference null so that it is eligible for garbage collection.
4. Never keep inheriting chains long since it involves calling all the parent constructors all along the chain until the constructor for java.lang.Object is reached.
5. Use primitive data types rather than using wrapper classes.
6. Whenever possible avoid using class variables, use local variables since accessing local variables is faster than accessing class variables.
7. Another technique is Lazy object creation: i.e. delaying the memory allocation to an object till it is not being put into use. This way a lot of memory is saved till the object is actually put in to use.
Performance improvement techniques in Exceptions
1. In a catch block avoid using the generic class Exception. For each try block use specific catch blocks based on what can go wrong in your code.
2. Whenever you are using a throws clause always use the specific subclass of Exception like FileNotFoundException rather than using throws Exception.
3. Always use the finally block to release the resources like a database connection, closing a file or socket connection etc. This prevents resource leaks even if an exception occurs.
4. Do not use Exception handling in loops. It is better to place loops inside try/catch blocks than vice versa. Here is an code snippet that gives bench mark.

Performance improvement techniques in loops

1. Always use an int data type as the loop index variable whenever possible because it is efficient when compared to using byte or short data types. because when we use byte or short data type as the loop index variable they involve implicit type cast to int data type.
2. When using arrays it is always efficient to copy arrays using System.arraycopy() than using a loop.
3. Always avoid anything that can be done outside of the loop like method calls, assigning values to variables, or testing for conditions.
4. Method calls are very costly and you only make it worse by putting them in a loop. So as far as possible avoid method calls in a loop.
5. It is better to avoid accessing array elements in a loop the better option would be to use a temporary variables inside the loop and modify the array values out of the loop. It is fast to use a variable in a loop than accessing an array element.
6. Try to compare the terminating condition with zero if you use non-JIT or HotSpot virtual machine, here is an example to prove the point. JIT or HotSpot virtual machines are optimized for general loops so you do not have to bother about the terminating condition.

Reference: www.precisejava.com

Tips For Measuring Application Performance
Here are some of important points which should be considered while measuring application performance.

- Test systems should match production as closely as possible. Same hardware, OS, and software.
- Populate databases with the number of records expected in production.
An application may perform well with a small number of records in the database. Performance could degrade a great deal as the number of records in the table(s) increases
- Test HTTP requests with different request parameters.
Test with the extremes. A page which performs a search may perform well when the search criteria returns a small result set, but perform poorly when the search criteria returns a large result set.
- Simulate expected traffic over time including short term spikes.
A page which performs well with low request volume can cause the server to fail under higher request volume.
- Use Server load testing tools (like Apache Jakarta JMeter) to simulate heavy load.

Tomcat - Jboss Performance Tuning Tips

Apache Tomcat is an implmentation of the Java Servlet and JavaServer Pages technologies.
In production Enviroment, number of resources which can all impact application overall performance. Here are some important point which can help to improve Tomcat Performance.

Performance Tuning - Tomcat Configuration

Configure server.xml parameters as following.

-Set reloadable to false

When reloadable is true Tomcat tries to detect web application class changes and automatically reload any classes which change. Setting this to false removes a lot of unnecessary overhead in production.

-Set liveDeploy to false

liveDeploy controls whether your webapps directory is periodically checked for new web application directories and war files. This is done using a background thread. Set this to false and use the manager application or ant deploy tasks instead.

-Set debug to 0

Disable all debug output, unnecessary logging just adds overhead.

-Set swallowOutput to true

This makes sure all output to stdout or stderr for a web application gets directed to the web application log rather than the console or catalina.out. This makes it easier to troubleshoot web application problems.

Performance Tuning - Jasper 2 Configuration

Configure web.xml parameters as following.

-Set development to false

Disables JSP page out of date checks on each request and enables JSP background recompiles. development is set to true by default.

-Use JSP custom tag pooling

Object pooling of classes which implement custom tags significantly improves performance of JSP pages which use custom tag libraries. JSP custom tag pooling is enabled by default.

-Configure Jasper to fork javac compiles. (Do not set fork to true on MS Windows)

The JVM compiler javac has known memory leaks. Eliminates JVM memory usage and GC overhead of javac by configuring Jasper to fork javac when compiling JSP pages.

Make Textbox hidden/visible based on the DropDown selection using JavaScript

2012-04-25T20:57:00.000-07:00

SOLUTION:

the following function will help you to solve this ......

function hideTextBox(dropDown1){
var valFromDropDown = dropDown1.value;
if(valFromDropDown == 'WRITE'){
document.forms[0].textBox1.style.visibility = "";
} else{
document.forms[0].textBox1.style.visibility = "hidden";
}
}

in the above example hideTextBox is the function name .....
and the input for this function is dropDown value selected......
in this example we are hiding the the text box if the drop down value is 'WRITE' else it will show the textbox......

the following Example.jsp page will clearly explain you how to implement this and please ignore this Symobl(--)inside the every tag Starting. i put this (--) for displaying html tags only kindly ignore that symbol

Example.jsp(please ignore this(--)symbol and try it it will surely work
--------------------------------------------------------------------

<%@taglib uri="/includes/struts-html.tld" prefix="html"%>
<%@taglib uri="/includes/struts-bean.tld" prefix="bean"%>
<%@taglib uri="/includes/struts-logic.tld" prefix="logic"%>



<script language="javascript">

function hideTextBox(dropDown1){
var valFromDropDown = dropDown1.value;
if(valFromDropDown == 'WRITE'){
document.forms[0].textBox1.style.visibility = "";
} else{
document.forms[0].textBox1.style.visibility = "hidden";
}
}

</script>




<table width="100%" border="0" cellspacing="0" cellpadding="0">

<tr>
<td width="20%">SelectProcess:
<td width="30%">
<html:select property="dropDown1" onchange="javascript:hideTextBox(this)">
<html:option value="READ">Read
<html:option value="WRITE">Write
<html:option value="OVERWRITE">OverWrite
</html:select>
<td width="20%">
<td width="30%">
</tr>

<tr>
<td width="20%">TextBox1:
<td width="30%">
<td width="30%"><html:text property="textBox1" maxlength="10" size="10">
</td>
<td width="20%">
<td width="30%">

</table>

</html:html>

--------------------------------------------------------------------------------------
from the above Example.jsp you can clearly understood how the function is implemented

note:

you have to declare these property in the form bean this is the example used in struts Frame work.

if you still having doubts write a comment on this.

Thanks

Download the CSV file using Servlets

2012-04-25T02:29:00.000-07:00

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class Csv
 */
@WebServlet("/Csv1")
public class Csv1 extends HttpServlet {
 private static final long serialVersionUID = 1L;

 /**
  * @see HttpServlet#HttpServlet()
  */
 public Csv1() {
  super();
  // TODO Auto-generated constructor stub
 }

 /**
  * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
  *      response)
  */
 protected void doGet(HttpServletRequest request,
   HttpServletResponse response) throws ServletException, IOException {
  // PrintWriter out = response.getWriter();
  Connection con = null;
  Statement stmt = null;
  ResultSet rs = null;
  try {
   Class.forName("com.mysql.jdbc.Driver");
   con = DriverManager.getConnection(
     "jdbc:mysql://localhost:3306/hibernate", "root", "root");
   stmt = con.createStatement();
   rs = stmt.executeQuery("SELECT * FROM employee");
   String filename = "d:\\csv\\myfile.csv";
   FileWriter fw = new FileWriter(filename);
   fw.append("Employee Code");
   fw.append(',');
   fw.append("Employee Name");
   fw.append('\n');

   while (rs.next()) {
    fw.append(rs.getObject(1).toString());
    fw.append(',');
    fw.append(rs.getObject(2).toString());
    fw.append('\n');
    fw.flush();
    // fw.close();
   }
   // out.println("<b>Csv file Successfully created.</b>");
   if (fw != null) {
    fw.close();
   }

  } catch (SQLException e) {
   throw new ServletException("Servlet Could not display records.", e);
  } catch (ClassNotFoundException e) {
   throw new ServletException("JDBC Driver not found.", e);
  } finally {
   try {
    if (rs != null) {
     rs.close();
     rs = null;
    }
    if (stmt != null) {
     stmt.close();
     stmt = null;
    }
    if (con != null) {
     con.close();
     con = null;
    }
   } catch (SQLException e) {
   }
  }

  File f = new File("d:\\csv\\myfile.csv");
  int length = 0;
  ServletOutputStream op = response.getOutputStream();
  ServletContext context = getServletConfig().getServletContext();
  String mimetype = context.getMimeType("text");
  //
  // Set the response and go!
  //
  //
  response.setContentType((mimetype != null) ? mimetype
    : "application/octet-stream");
  response.setContentLength((int) f.length());
  response.setHeader("Content-Disposition",
    "attachment; filename=d:\\csv1.csv");

  //
  // Stream to the requester.
  //
  byte[] bbuf = new byte[1024];
  DataInputStream in = new DataInputStream(new FileInputStream(f));

  while ((in != null) && ((length = in.read(bbuf)) != -1)) {
   op.write(bbuf, 0, length);
  }

  in.close();
  op.flush();
  op.close();
  // TODO Auto-generated method stub
 }

 /**
  * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
  *      response)
  */
 protected void doPost(HttpServletRequest request,
   HttpServletResponse response) throws ServletException, IOException {
  // TODO Auto-generated method stub
 }

}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app>
<servlet>
<servlet-name>csv1</servlet-name>
<servlet-class>Csv1</servlet-class>

</servlet>
<servlet-mapping>
<servlet-name>csv1</servlet-name>
<url-pattern>/csv1</url-pattern>

</servlet-mapping>


</web-app>

How to write our own result type in struts2

2012-04-12T21:34:00.000-07:00

Action Class

package com.lkr.action;


import com.lkr.service.UserService;
import com.lkr.vo.User;
import com.opensymphony.xwork2.ActionSupport;


public class GetImageAction extends ActionSupport {


 private static final long serialVersionUID = 1L;
 private UserService userService;
 private Long id;
 private User user;


 public Long getId() {
  return id;
 }


 public void setId(Long id) {
  this.id = id;
 }


 public UserService getUserService() {
  return userService;
 }


 public void setUserService(UserService userService) {
  this.userService = userService;
 }


 @Override
 public String execute() throws Exception {

  System.out.println("this is come from after display image jsp");
  user = userService.getUserById(id);
  return "imageBytesResult";
 }


 public String getContentDisposition() {
  return "";
 }

 public int getBufferSize() {
  return 4096;
 }
}

Result Type Class

package com.lkr.action;


import javax.servlet.http.HttpServletResponse;


import org.apache.struts2.ServletActionContext;


import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.Result;


public class ImageBytesResult implements Result {


 private static final long serialVersionUID = 1L;


 @Override
 public void execute(ActionInvocation invocation) throws Exception {
  GetImageAction action = (GetImageAction) invocation.getAction();
  HttpServletResponse response = ServletActionContext.getResponse();


  //response.setContentType(action.getContentType());
  //response.setContentLength(action.getContentLength());
  response.getOutputStream().write(action.getImageInBytes());
  response.getOutputStream().flush();
 }


}

Service

package com.lkr.service;


import java.util.List;

import com.lkr.dao.UserDAO;
import com.lkr.vo.User;


public class UserService{
 private UserDAO userDao;


 public UserDAO getUserDao() {
  return userDao;
 }


 public void setUserDao(UserDAO userDao) {
  this.userDao = userDao;
 }


 
 public User save(User user) throws Exception {


  return userDao.save(user);
 }



 public List<User> getAllUsers() throws Exception {


  return userDao.getAllUsers();
 }


 
 public User getUserById(long id) throws Exception {
  return userDao.getUserById(id);
 }
}

DAO

package com.lkr.dao;


import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.List;

import org.hibernate.Transaction;

import com.lkr.vo.User;


public class UserDAO {


 
 public User save(User user) throws Exception {
  Transaction tx=getSession().beginTransaction();
  getSession().save(user);
  
  tx.commit();
  return user;
 }


 
 public List<User> getAllUsers() throws Exception {
  List<User> allUsers = getSession().createQuery("from User").list();
  return allUsers;
 }


 
 public User getUserById(long id) throws Exception {
  User user = (User) getSession().get(User.class, new Long(id));
  // Convert BLOB to byte array
  user.setImageInBytes(getImageInBytes(user));
  user.setContentLength((int) user.getImage().length());
  return user;
 }


 public byte[] getImageInBytes(User user) {


  if (user.getImage() == null) {
   return new byte[0];
  }
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  try {
   InputStream is = user.getImage().getBinaryStream();
   byte[] buf = new byte[1024];
   int i = 0;
   while ((i = is.read(buf)) >= 0) {
    baos.write(buf, 0, i);
   }
   is.close();
  } catch (Exception ex) {
   ex.printStackTrace();
  }
  return baos.toByteArray();
 }
}

struts.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">


<struts>
 <constant name="struts.devMode" value="false" />
 <constant name="struts.custom.i18n.resources" value="global" />
 <constant name="struts.objectFactory" value="spring" />


 <package name="commonPackage" namespace="/" extends="struts-default">


  <result-types>
   <result-type name="imageBytesResult"
    class="com.lkr.action.ImageBytesResult" />
  </result-types>


  <action name="addUserData" class="com.lkr.action.UserAction">
   <result name="input">
    WEB-INF/jsp/imageUploader.jsp
   </result>
  </action>
  <action name="displayFullImage" class="com.lkr.action.FullImageAction">
   <result name="input">
    WEB-INF/jsp/dispalyFullImage.jsp
   </result>
  </action>


  <action name="getImage" class="com.lkr.action.GetImageAction">
   <result name="imageBytesResult" type="imageBytesResult">
   </result>
  </action>
 </package>


</struts>

If you are directly getting Byte[] from the database then you don't need to convert Blob to Byte[]

Creating Pdf By Using Struts2

2012-04-07T02:01:00.002-07:00

Struts Framework and Stream Result type configuration for the Action to send binary stream to the browser as PDF
content type

In this example I shall be showing step by step ways to follow through various pieces of code to process or achieve
an objective of presenting binary content type to browser based client and this is presented to the client with the
same name as mentioned in struts.xml configuration file.

Struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
  <package name="stream-example" namespace="/sample-stream"
                 extends="struts-default">
    <action name="pdfAction" class="com.lkr.struts2.pdf.GeneratingPdfAction" 
                        method="generatingPdf">
       <result name="test-stream" type="stream">
         <param name="inputName">fileStream</param>
  <param name="contentType">application/pdf</param>
         <param name="contentDisposition">filename="test.pdf"</param>
       </result>
    </action>
  </package>
</struts>

Action class "GeneratingPdfAction.java" is having a generatingPdf method that assigns an input stream to a private

instance variable, this variable is mentioned as the inputName param value to the result tag.

In this example, the inputName param is having value as fileStream, that is defined as an instance variable

in Action class.

GeneratingPdfAction

package com.lkr.struts2.pdf;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;
import com.itextpdf.text.Anchor;
import com.itextpdf.text.BadElementException;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Chapter;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.ListItem;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Section;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;

public class GeneratingPdfAction {
 private InputStream fileStream;
 private static String FILE = "c:/temp/FirstPdf.pdf";
 private static Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 18,
   Font.BOLD);
 private static Font redFont = new Font(Font.FontFamily.TIMES_ROMAN, 12,
   Font.NORMAL, BaseColor.RED);
 private static Font subFont = new Font(Font.FontFamily.TIMES_ROMAN, 16,
   Font.BOLD);
 private static Font smallBold = new Font(Font.FontFamily.TIMES_ROMAN, 12,
   Font.BOLD);

 public void setFileStream(InputStream arg) {
  fileStream = arg;
 }

 public InputStream getFileStream() {
  return fileStream;
 }


 public String generatingPdf() throws Exception {
  
  try {
   Document document = new Document();
   PdfWriter.getInstance(document, new FileOutputStream(FILE));
   document.open();
   addMetaData(document);
   addTitlePage(document);
   addContent(document);
   document.close();
  } catch (Exception e) {
   e.printStackTrace();
  }
  try{
   fileStream = new DataInputStream(
     new FileInputStream(FILE));
  } catch (IOException ioEx) {
   ioEx.printStackTrace();
  }
  
  return "test-stream";
 }
 
 private static void addMetaData(Document document) {
  document.addTitle("My first PDF");
  document.addSubject("Using iText");
  document.addKeywords("Java, PDF, iText");
  document.addAuthor("Konda Reddy. Lingamdinne");
  document.addCreator("Konda Reddy. Lingamdinne");
 }

 private static void addTitlePage(Document document)
   throws DocumentException {
  Paragraph preface = new Paragraph();
  // We add one empty line
  addEmptyLine(preface, 1);
  // Lets write a big header
  preface.add(new Paragraph("Title of the document", catFont));

  addEmptyLine(preface, 1);
  // Will create: Report generated by: _name, _date
  preface.add(new Paragraph(
    "Report generated by: " + System.getProperty("user.name") + ", " + new Date(), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
    smallBold));
  addEmptyLine(preface, 3);
  preface.add(new Paragraph(
    "This document describes something which is very important ",
    smallBold));

  addEmptyLine(preface, 8);

  preface.add(new Paragraph(
    "This document is a preliminary version and not subject to your license agreement or any other agreement with vogella.de ;-).",
    redFont));

  document.add(preface);
  // Start a new page
  document.newPage();
 }

 private static void addContent(Document document) throws DocumentException {
  Anchor anchor = new Anchor("First Chapter", catFont);
  anchor.setName("First Chapter");

  // Second parameter is the number of the chapter
  Chapter catPart = new Chapter(new Paragraph(anchor), 1);

  Paragraph subPara = new Paragraph("Subcategory 1", subFont);
  Section subCatPart = catPart.addSection(subPara);
  subCatPart.add(new Paragraph("Hello"));

  subPara = new Paragraph("Subcategory 2", subFont);
  subCatPart = catPart.addSection(subPara);
  subCatPart.add(new Paragraph("Paragraph 1"));
  subCatPart.add(new Paragraph("Paragraph 2"));
  subCatPart.add(new Paragraph("Paragraph 3"));

  // Add a list
  Paragraph paragraph = new Paragraph();
  addEmptyLine(paragraph, 5);
  subCatPart.add(paragraph);

  // Add a table
  createTable(subCatPart);

  // Now add all this to the document
  document.add(catPart);

  // Next section
  anchor = new Anchor("Second Chapter", catFont);
  anchor.setName("Second Chapter");

  // Second parameter is the number of the chapter
  catPart = new Chapter(new Paragraph(anchor), 1);

  subPara = new Paragraph("Subcategory", subFont);
  subCatPart = catPart.addSection(subPara);
  subCatPart.add(new Paragraph("This is a very important message"));

  // Now add all this to the document
  document.add(catPart);

 }

 private static void createTable(Section subCatPart)
   throws BadElementException {
  PdfPTable table = new PdfPTable(3);

  // t.setBorderColor(BaseColor.GRAY);
  // t.setPadding(4);
  // t.setSpacing(4);
  // t.setBorderWidth(1);

  PdfPCell c1 = new PdfPCell(new Phrase("Table Header 1"));
  c1.setHorizontalAlignment(Element.ALIGN_CENTER);
  table.addCell(c1);

  c1 = new PdfPCell(new Phrase("Table Header 2"));
  c1.setHorizontalAlignment(Element.ALIGN_CENTER);
  table.addCell(c1);

  c1 = new PdfPCell(new Phrase("Table Header 3"));
  c1.setHorizontalAlignment(Element.ALIGN_CENTER);
  table.addCell(c1);
  table.setHeaderRows(1);

  table.addCell("1.0");
  table.addCell("1.1");
  table.addCell("1.2");
  table.addCell("2.1");
  table.addCell("2.2");
  table.addCell("2.3");

  subCatPart.add(table);

 }

 private static void addEmptyLine(Paragraph paragraph, int number) {
  for (int i = 0; i < number; i++) {
   paragraph.add(new Paragraph(" "));
  }
 }

}

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, 
    Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
    <display-name>Struts 2 Stream Result type</display-name>
  <filter>
  <filter-name>sample-filter</filter-name>
  <filter-class> 
    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
  </filter-class>
  </filter>
  <filter-mapping>
    <filter-name>sample-filter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

This example application creates PDF file and reads the PDF file from the path mentioned in the Action class and

generatingPdf method.
This result type definition in struts.xml file sends those to the client as downloadable file name.

Core Java Interview Questions

2012-03-30T03:36:00.000-07:00

Can there be an abstract class with no abstract methods in it? - Yes
Can an Interface be final? - No
Can an Interface have an inner class? - Yes.
 public interface abc
 {
  static int i=0; void dd();
  class a1
  {
   a1()
   {
    int j;
    System.out.println("inside");
   };
   public static void main(String a1[])
   {
    System.out.println("in interfia");
   }
  }
 }

Can we define private and protected modifiers for variables in interfaces? - No
What is Externalizable? - Externalizable is an Interface
 that extends Serializable Interface. And sends data into Streams in 
Compressed Format. It has two methods, writeExternal(ObjectOuput out) 
and readExternal(ObjectInput in)
What modifiers are allowed for methods in an Interface? - Only public and abstract modifiers are allowed for methods in interfaces.
What is a local, member and a class variable? - 
Variables declared within a method are “local” variables. Variables 
declared within the class i.e not within any methods are “member” 
variables (global variables). Variables declared within the class i.e 
not within any methods and are defined as “static” are class variables
What are the different identifier states of a Thread? - 
The different identifiers of a Thread are: R - Running or runnable 
thread, S - Suspended thread, CW - Thread waiting on a condition 
variable, MW - Thread waiting on a monitor lock, MS - Thread suspended 
waiting on a monitor lock
What are some alternatives to inheritance? - Delegation 
is an alternative to inheritance. Delegation means that you include an 
instance of another class as an instance variable, and forward messages 
to the instance. It is often safer than inheritance because it forces 
you to think about each message you forward, because the instance is of a
 known class, rather than a new class, and because it doesn’t force you 
to accept all the methods of the super class: you can provide only the 
methods that really make sense. On the other hand, it makes you write 
more code, and it is harder to re-use (because it is not a subclass).
Why isn’t there operator overloading? - Because C++ has 
proven by example that operator overloading makes code almost impossible
 to maintain. In fact there very nearly wasn’t even method overloading 
in Java, but it was thought that this was too useful for some very basic
 methods like print(). Note that some of the classes like 
DataOutputStream have unoverloaded methods like writeInt() and 
writeByte().
What does it mean that a method or field is “static”? - 
Static variables and methods are instantiated only once per class. In 
other words they are class variables, not instance variables. If you 
change the value of a static variable in a particular object, the value 
of that variable changes for all instances of that class. Static methods
 can be referenced with the name of the class rather than the name of a 
particular object of the class (though that works too). That’s how 
library methods like System.out.println() work. out is a static field in
 the java.lang.System class.
How do I convert a numeric IP address like 192.18.97.39 into a hostname like java.sun.com?
 String hostname = InetAddress.getByName("192.18.97.39").getHostName();

Difference between JRE/JVM/JDK?
Why do threads block on I/O? - Threads block on i/o 
(that is enters the waiting state) so that other threads may execute 
while the I/O operation is performed.
What is synchronization and why is it important? - With 
respect to multithreading, synchronization is the capability to control 
the access of multiple threads to shared resources. Without 
synchronization, it is possible for one thread to modify a shared object
 while another thread is in the process of using or updating that 
object’s value. This often leads to significant errors.
Is null a keyword? - The null value is not a keyword.
Which characters may be used as the second character of an identifier,but not as the first character of an identifier?
 - The digits 0 through 9 may not be used as the first character of an 
identifier but they may be used after the first character of an 
identifier.
What modifiers may be used with an inner class that is a member of an outer class? - A (non-local) inner class may be declared as public, protected, private, static, final, or abstract.
How many bits are used to represent Unicode, ASCII, UTF-16, and UTF-8 characters?
 - Unicode requires 16 bits and ASCII require 7 bits. Although the ASCII
 character set uses only 7 bits, it is usually represented as 8 bits. 
UTF-8 represents characters using 8, 16, and 18 bit patterns. UTF-16 
uses 16-bit and larger bit patterns.
What are wrapped classes? - Wrapped classes are classes that allow primitive types to be accessed as objects.
What restrictions are placed on the location of a package statement within a source code file? - A package statement must appear as the first line in a source code file (excluding blank lines and comments).
What is the difference between preemptive scheduling and time slicing?
 - Under preemptive scheduling, the highest priority task executes until
 it enters the waiting or dead states or a higher priority task comes 
into existence. Under time slicing, a task executes for a predefined 
slice of time and then reenters the pool of ready tasks. The scheduler 
then determines which task should execute next, based on priority and 
other factors.
What is a native method? - A native method is a method that is implemented in a language other than Java.
What are order of precedence and associativity, and how are they used?
 - Order of precedence determines the order in which operators are 
evaluated in expressions. Associatity determines whether an expression 
is evaluated left-to-right or right-to-left
What is the catch or declare rule for method declarations?
 - If a checked exception may be thrown within the body of a method, the
 method must either catch the exception or declare it in its throws 
clause.
Can an anonymous class be declared as implementing an interface and extending a class? - An anonymous class may implement an interface or extend a superclass, but may not be declared to do both.
What is the range of the char type? - The range of the char type is 0 to 2^16 - 1.

VideoFileReadingAndCoping

2012-03-30T03:04:00.001-07:00

package com.lkr.properties;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

public class VideoFileReadingAndCoping

{

   public static void main(String[] args)

   {    

    File videofile = new File("D:\\video\\MELT.MPG");

    FileInputStream fileInputStream = null;

    try {

        fileInputStream = new FileInputStream(videofile);

    } catch (FileNotFoundException e) {

        // TODO Auto-generated catch block

        e.printStackTrace();

    }

    ByteArrayOutputStream out = new ByteArrayOutputStream();

    try {

        while (fileInputStream.available()>0) {

            out.write(fileInputStream.read());

        }

    } catch (IOException e) {

        // TODO Auto-generated catch block

        e.printStackTrace();

    }

    File file1 = new File("D:\\video\\LKR.MPG");

    FileOutputStream foStream = null;

    try {

        foStream = new FileOutputStream(file1);

    } catch (FileNotFoundException e) {

        // TODO Auto-generated catch block

        e.printStackTrace();

    }

    ByteArrayOutputStream oStream = new ByteArrayOutputStream();

    //InputStream is2 = is2.read(jpgByteArray);

    try {

        oStream.write(out.toByteArray());

    } catch (IOException e) {

        // TODO Auto-generated catch block

        e.printStackTrace();

    }

   try {

        oStream.writeTo(foStream);

    } catch (IOException e) {

        // TODO Auto-generated catch block

        e.printStackTrace();

    }

   }

}

JUnit Test cases for Struts2 Action class With Spring and hibernate integration

2012-03-29T03:14:00.000-07:00

Base Test Class

/**

 * 

 */

package com.lkr.base.test;

import java.util.HashMap;

import junit.framework.TestCase;

import org.apache.struts2.ServletActionContext;

import org.apache.struts2.dispatcher.Dispatcher;

import org.apache.struts2.views.JspSupportServlet;

import org.springframework.context.ApplicationContext;

import org.springframework.mock.web.MockHttpServletRequest;

import org.springframework.mock.web.MockHttpServletResponse;

import org.springframework.mock.web.MockServletConfig;

import org.springframework.mock.web.MockServletContext;

import org.springframework.web.context.ContextLoader;

import com.opensymphony.xwork2.ActionProxy;

import com.opensymphony.xwork2.ActionProxyFactory;

import com.opensymphony.xwork2.ActionSupport;

/**

 * 

 * @author KONDA REDDY. LINGAMDINNE

 */

public abstract class IDEActionBaseTest extends TestCase {

    private static final String CONFIG_LOCATIONS ="applicationContext.xml"+",ideazExchangeTiles-defs.xml";

    private static ApplicationContext applicationContext;

    private Dispatcher dispatcher;

    protected ActionProxy proxy;

    protected static MockServletContext servletContext;

    protected static MockServletConfig servletConfig;

    protected MockHttpServletRequest request;

    protected MockHttpServletResponse response;

    public IDEActionBaseTest(String name) {

        super(name);

    }

    @SuppressWarnings({ "unchecked", "deprecation", "rawtypes" })

    protected ActionSupport createAction( String namespace, String name)

    throws Exception {

        proxy = dispatcher.getContainer().getInstance(ActionProxyFactory.class).createActionProxy(namespace, name, null, true, false);

        proxy.getInvocation().getInvocationContext().

        setParameters(new HashMap());

        proxy.setExecuteResult(true);

        ServletActionContext.setContext(

        proxy.getInvocation().getInvocationContext());

        request = new MockHttpServletRequest();

        response = new MockHttpServletResponse();

        ServletActionContext.setRequest(request);

        ServletActionContext.setResponse(response);

        ServletActionContext.setServletContext(servletContext);

        return (ActionSupport) proxy.getAction();

    }

    @SuppressWarnings({ "rawtypes", "unchecked" })

    protected void setUp() throws Exception {

        if (applicationContext == null) {

            servletContext = new MockServletContext();

            servletContext.addInitParameter(

                    ContextLoader.CONFIG_LOCATION_PARAM,

                    CONFIG_LOCATIONS);

            applicationContext = (new ContextLoader())

                    .initWebApplicationContext(servletContext);

            new JspSupportServlet().init(new MockServletConfig(servletContext));

        }

        HashMap params = new HashMap();

        params.put("actionPackages", "com.lkr.admin.action");

        dispatcher = new Dispatcher(servletContext, params);

        dispatcher.init();

        Dispatcher.setInstance(dispatcher);

    }

}

package com.lkr.base.test;

import com.lkr.view.UsersView;

import com.lkr.admin.action.LoginAction;

public class LoginActionTest extends IDEActionBaseTest {

    public LoginActionTest(String name) {

        super(name);

        // TODO Auto-generated constructor stub

    }

    protected void setUp() throws Exception {

        super.setUp();

    }

    protected void tearDown() throws Exception {

        super.tearDown();

    }

    public void testLogin() throws Exception {

        LoginAction loginAction = (LoginAction) createAction("/", "login");

        UsersView usersView = new UsersView();

        loginAction.setUsersView(usersView);

        usersView.setLoginId("use");

        usersView.setPassword("fuhdsiah");

        // loginAction.login();

    //  System.out.println(loginAction.login());

    }

}

Konda Reddy

Struts2 File Upload

Hibernate Pojo Annotations

Struts2 Restful webservices

Spring & Struts2 and Hibernate Integration

Apache is not running from XAMPP Control Panel

How to Change the Apache Port in XAMPP

Why Change the Port?

How to Change the Port

Sending Android Push Notification in My Phonegap Application

Registering with Google Cloud Messaging

Integrating Jasper Reports With Struts2-jasper Plugin

Sending An e-mail with attachment in my Phonegap Android Application

File Uploading Using Java(Servlet)

Eclipse: Writing Better, Faster Java Documentation

Difference between String and StringBuffer Class

Hibernate Caching Tutorial

2.1) 2.1 EHCache (Easy Hibernate Cache) (org.hibernate.cache.EhCacheProvider)

2.2)OSCache (Open Symphony Cache) (org.hibernate.cache.OSCacheProvider)

2.3)SwarmCache (org.hibernate.cache.SwarmCacheProvider)

2.4)JBoss TreeCache (org.hibernate.cache.TreeCacheProvider)

3.1) Read-only

3.2) Read-Write

3.3) Nonstrict read-write

3.4) Transactional

5.1) Performance

5.2) About Caching

Red5 Streaming

HTML5 video tag in my Phone gap Android application

Enable the query cache in MySQL to improve performance

Howto enable caching in MySQL

How to stream audio and video media online on a shoe-string budget

Core Java Questions with answers

Tuning Performance of Java Web Application

Make Textbox hidden/visible based on the DropDown selection using JavaScript

Download the CSV file using Servlets

How to write our own result type in struts2

Creating Pdf By Using Struts2

Core Java Interview Questions

VideoFileReadingAndCoping

JUnit Test cases for Struts2 Action class With Spring and hibernate integration