Java-Rules

Java8 Add Numbers

2019-05-15T19:00:00.001+05:30

@FunctionalInterface
interface AddNumbers{
public int addNumbers(int x, int y);
}

public class Java8AddNumbers {

public static void main(String[] args) {
AddNumbers addNumbers = (x, y) -> x+y;

int result = addNumbers.addNumbers(10, 30);
System.out.println(result);

}

}

Java8 Print Hello

2019-05-15T18:52:00.001+05:30

public class Java8PrintHello {

public static void main(String[] args) {
SayHello wish = name -> "Hello "+name;
System.out.println(wish.sayHello("Sai Kumar"));
}

}

@FunctionalInterface
interface SayHello{
public String sayHello(String name);
}

Hibernate Annotations Approach

2017-10-11T17:46:00.003+05:30

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.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@172.20.1.47:1521:XE</property>
<property name="hibernate.connection.username">DLAUDIT</property>
<property name="hibernate.connection.password">DLAUDIT</property>

<property name="hibernate.connection.pool_size">10</property>


<property name="hibernate.current_session_context_class">thread</property>


<property name="hibernate.show_sql">true</property>
<property name="format_sql">true</property>


<property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>


<mapping class="com.hiberante.api.annotations.Account" />
</session-factory>

</hibernate-configuration>

Account.java

package com.hiberante.api.annotations;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name="ACCOUNT")
public class Account {

@Id
@Column(name="ID")
private Integer id;

@Column(name = "GUI")
private String gui;

@Column(name="FIRST_NAME")
private String firstName;

@Column(name="LAST_NAME")
private String lastName;

@Column(name="AGE")
private Integer age;

public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getGui() {
return gui;
}
public void setGui(String gui) {
this.gui = gui;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}

}

Hibernate Declarative Approach

2017-10-11T17:44:00.000+05:30

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.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@172.20.1.47:1521:XE</property>
<property name="hibernate.connection.username">DLAUDIT</property>
<property name="hibernate.connection.password">DLAUDIT</property>

<property name="hibernate.connection.pool_size">10</property>


<property name="hibernate.current_session_context_class">thread</property>


<property name="hibernate.show_sql">true</property>
<property name="format_sql">true</property>


<property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>


<mapping resource="resorces/Account.hbm.xml" />
</session-factory>
</hibernate-configuration>

Account.hbm.xml

<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="com.hiberante.api.declartive.Account" table = "ACCOUNT">
<id name="id" column="ID" type="java.lang.Integer"></id>
<property name="gui" column="GUI" type="java.lang.String"/>
<property name="firstName" column="FIRST_NAME" type="java.lang.String"/>
<property name="lastName" column="LAST_NAME" type="java.lang.String"/>
<property name="age" column="AGE" type="java.lang.Integer"/>
</class>

</hibernate-mapping>

Hibernate Programmatic Approch

2017-10-11T17:42:00.003+05:30

package resorces;

import java.util.Properties;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

import com.hiberante.api.programetic.Account;

public class HiberanateConfig {

//Property based configuration
private static SessionFactory sessionJavaConfigFactory;

private static SessionFactory buildSessionJavaConfigFactory() {
try {
Configuration configuration = new Configuration();

//Create Properties, can be read from property files too
Properties props = new Properties();
props.put("hibernate.connection.driver_class", "oracle.jdbc.driver.OracleDriver");
props.put("hibernate.connection.url", "jdbc:oracle:thin:@localhost:1521:XE");
props.put("hibernate.connection.username", "DLAUDIT");
props.put("hibernate.connection.password", "DLAUDIT");
props.put("hibernate.current_session_context_class", "thread");
props.put("hibernate.show_sql", true);
props.put("format_sql", true);
props.put("hibernate.dialect", "org.hibernate.dialect.OracleDialect");

configuration.setProperties(props);

//we can set mapping file or class with annotation
//addClass(Employee1.class) will look for resource
// com/journaldev/hibernate/model/Employee1.hbm.xml (not good)
configuration.addAnnotatedClass(Account.class);

//configuration.addClass(Account.class);
//configuration.addResource("resorces/Account.hbm.xml");

// ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
System.out.println("Hibernate Java Config serviceRegistry created");

SessionFactory sessionFactory = configuration.buildSessionFactory();

return sessionFactory;
}
catch (Throwable ex) {
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}

public static SessionFactory getSessionJavaConfigFactory() {
if(sessionJavaConfigFactory == null) sessionJavaConfigFactory = buildSessionJavaConfigFactory();
return sessionJavaConfigFactory;
}

}

Hibernate and Spring With Domain Scan Package

2017-10-11T17:41:00.000+05:30

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">


<context:component-scan base-package="com.hibernate.spring" />
<context:component-scan base-package="com.hibernate.spring.controller" />


<mvc:annotation-driven />


<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>


<bean id="entityManagerFactoryBean" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />

<property name="packagesToScan" value="com.hibernate.spring.domain" />

<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop>
</props>
</property>
</bean>


<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@172.20.1.47:1521:XE" />
<property name="username" value="DLAUDIT" />
<property name="password" value="DLAUDIT" />
</bean>


<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactoryBean" />
</bean>


<tx:annotation-driven />

</beans>

Find Type Of Object By Data or Itself

2017-06-25T22:39:00.001+05:30

package com.test;

public class FindType {

public static void main(String[] args) {
System.out.println(findTypeOfObject("10"));
System.out.println(findTypeOfObject(10));
System.out.println(findTypeOfObject(10.00));
}

private static String findTypeOfObject(Object object){
String type = null;
if (object != null ) {
type = object.getClass().getName();
}
return type;
}

}

Transpose Matrix

2017-06-25T22:30:00.003+05:30

package com.test;

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

public class Transpose {
public static void main(String[] args) {
List<List<String>> data = getData();
System.out.println("\n--------------------------Before Transpoese------------------------");
for (int row = 0; row < data.size(); row++) {
List<String> colLst = data.get(row);
System.out.println(" ");
for (int i = 0; i < colLst.size(); i++) {
String cell = colLst.get(i);
System.out.print(" "+cell);
}
}
System.out.println("\n--------------------------After Transpoese------------------------");
List<List<String>> transposedData = transposeData(data);
for (int row = 0; row < transposedData.size(); row++) {
List<String> colLst = transposedData.get(row);
System.out.println(" ");
for (int i = 0; i < colLst.size(); i++) {
String cell = colLst.get(i);
System.out.print(" "+cell);
}
}
}

private static List<List<String>> transposeData(List<List<String>> data){

List<String> rowList = new ArrayList<String>();
List<List<String>> colList = new ArrayList<List<String>>();

for (int row = 0; row < data.get(0).size(); row++) {
rowList = new ArrayList<String>();
for (int col = 0; col < data.size(); col++) {
String d = data.get(col).get(row);
rowList.add(d);
}
colList.add(rowList);
}

return colList;
}

private static List<List<String>> getData(){
List<List<String>> data = new ArrayList<List<String>>();

List<String> dataRow = new ArrayList<String>();
dataRow.add("1");
dataRow.add("A");
dataRow.add("0");
dataRow.add("-");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("2");
dataRow.add("B");
dataRow.add("1");
dataRow.add("-");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("3");
dataRow.add("C");
dataRow.add("1");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("4");
dataRow.add("D");
dataRow.add("2");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("5");
dataRow.add("E");
dataRow.add("2");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("6");
dataRow.add("F");
dataRow.add("3");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("7");
dataRow.add("G");
dataRow.add("3");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("8");
dataRow.add("H");
dataRow.add("7");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("9");
dataRow.add("I");
dataRow.add("7");
dataRow.add("");
data.add(dataRow);

return data;
}
}

2017-06-22T08:22:00.000+05:30

package com.test;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class TestService {

static Map<String, String> mapN = new HashMap<String, String>();
static int max_depth = 0;
public static void main(String[] args) {
List<List<String>> data = getData();
System.out.println(data);
Map<String, List<String>> mapP = new HashMap<String, List<String>>();

for (int i = 0; i < data.size(); i++) {
List<String> rows = data.get(i);
if(mapP.get(rows.get(2)) != null){
List<String> listC = mapP.get(rows.get(2));
listC.add(rows.get(0));
mapN.put(rows.get(0), rows.get(1));
} else {
List<String> listC = new ArrayList<String>();
listC.add(rows.get(0));
mapN.put(rows.get(0), rows.get(1));
mapP.put(rows.get(2), listC);
}
}
List<List<String>> level_list = new ArrayList<List<String>>();
List<List<String>> final_list = new ArrayList<List<String>>();
List<String> first_level = mapP.get("0");
List<String> this_level_list = new ArrayList<>();
loopingLowerLevel(first_level, mapP, 1, level_list, this_level_list);
for(int i = 0; i < level_list.size(); i++){
List<String> list = level_list.get(i);
for(int j = 0; j < max_depth; j++){
if(j >= list.size()){
if(i == 0){
List<String> list_d = new ArrayList<>();
list_d.add("");
final_list.add(list_d);
} else {
List<String> list_dd = final_list.get(j);
list_dd.add("");
final_list.set(j, list_dd);
}
} else {
if(i == 0){
List<String> list_d = new ArrayList<>();
list_d.add(list.get(j));
final_list.add(list_d);
} else {
List<String> list_dd = final_list.get(j);
list_dd.add(list.get(j));
final_list.set(j, list_dd);
}
}
}
}
for(int finall = 0; finall < final_list.size(); finall++){
System.out.println(final_list.get(finall));
}
}

private static void loopingLowerLevel(List<String> low_level_list, Map<String, List<String>> mapP, int level, List<List<String>> level_list, List<String> tree){
for(int i = 0; i < low_level_list.size(); i++){
List<String> another_level_list = mapP.get(low_level_list.get(i));
List<String> this_level_list = new ArrayList<>(tree);
this_level_list.add(mapN.get(low_level_list.get(i)));
if(another_level_list != null){
loopingLowerLevel(another_level_list, mapP, (level+1), level_list, this_level_list);
} else {
level_list.add(this_level_list);
if(level > max_depth)
max_depth = level;
}
}
}

/*private static int loopingLowerLevel(List<String> low_level_list, Map<String, List<String>> mapP, String parent, int level, List<List<String>> level_list){
for(int i = 0; i < low_level_list.size(); i++){
List<String> another_level_list = mapP.get(low_level_list.get(i));
if(level_list.size() > level) {
List<String> list_p = level_list.get(level);
list_p.add(mapN.get(low_level_list.get(i)));
level_list.add(level, list_p);
} else {
List<String> list_p = new ArrayList<String>();
list_p.add(mapN.get(low_level_list.get(i)));
level_list.add(level, list_p);
}
if(another_level_list != null){
int rtnLevel = loopingLowerLevel(another_level_list, mapP, low_level_list.get(i), level++, level_list);

} else {

}
}

}*/

private static List<List<String>> getData(){
List<List<String>> data = new ArrayList<List<String>>();

List<String> dataRow = new ArrayList<String>();
dataRow.add("1");
dataRow.add("A");
dataRow.add("0");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("2");
dataRow.add("B");
dataRow.add("1");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("3");
dataRow.add("C");
dataRow.add("1");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("4");
dataRow.add("D");
dataRow.add("2");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("5");
dataRow.add("E");
dataRow.add("2");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("6");
dataRow.add("F");
dataRow.add("3");
dataRow.add("");
data.add(dataRow);

dataRow = new ArrayList<String>();
dataRow.add("7");
dataRow.add("G");
dataRow.add("3");
dataRow.add("");
data.add(dataRow);

return data;
}

}

Super Model

2017-06-08T01:05:00.002+05:30

<H3>SuperModel</H3>

package com.test;

import java.util.List;

public class SuperModel {

private String data;
private String dataType;
private String name;
private String id;
private String cssClass;
private int rowSpan = 1;
private int colSpan = 1;

List<SuperModel> childSuperModel;

public String getData() {
return data;
}

public void setData(String data) {
this.data = data;
}

public String getDataType() {
return dataType;
}

public void setDataType(String dataType) {
this.dataType = dataType;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getId() {
return id;
}

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

public String getCssClass() {
return cssClass;
}

public void setCssClass(String cssClass) {
this.cssClass = cssClass;
}

public int getRowSpan() {
return rowSpan;
}

public void setRowSpan(int rowSpan) {
this.rowSpan = rowSpan;
}

public int getColSpan() {
return colSpan;
}

public void setColSpan(int colSpan) {
this.colSpan = colSpan;
}

public List<SuperModel> getChildSuperModel() {
return childSuperModel;
}

public void setChildSuperModel(List<SuperModel> childSuperModel) {
this.childSuperModel = childSuperModel;
}

@Override
public String toString() {
return "SuperModel [data=" + data + ", dataType=" + dataType + ", name=" + name + ", id=" + id + ", cssClass="
+ cssClass + ", rowSpan=" + rowSpan + ", colSpan=" + colSpan + ", childSuperModel=" + childSuperModel
+ "]";
}

}

package com.test;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.servlet.ModelAndView;

@Controller

public class SuperModelTestController {

@Autowired

SuperModelService superModelService;

@RequestMapping("getSuperModelView.htm")

public ModelAndView getSuperModelView(){

ModelAndView view = new ModelAndView("superModelView");

SuperModel superModelTable = superModelService.getSuperModelData();

view.addObject("superModelTable", superModelTable);

return view;

}

package com.test;

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

import org.springframework.stereotype.Service;

@Service
public class SuperModelServiceImpl implements SuperModelService {

private List<List<Object>> getData(){
List<List<Object>> data = new ArrayList<List<Object>>();
for (int i = 0; i < 10; i++) {
List<Object> row = new ArrayList<Object>();
for (int j = 0; j < 5; j++) {
Object obj = "Cell-"+i+"-"+j;
row.add(obj);
}
data.add(row);
}
System.out.println(data);
return data;
}

@Override
public SuperModel getSuperModelData() {
List<List<Object>> data = getData();
SuperModel superModelTable = new SuperModel();
List<SuperModel> superModelTableList = null;
if(data != null && !data.isEmpty()){
superModelTableList = new ArrayList<SuperModel>();
SuperModel superModelRow = new SuperModel();
for (List<Object> listObj : data) {
List<SuperModel> superModelRowList = new ArrayList<SuperModel>();
for (Object object : listObj) {
SuperModel superModelCell = new SuperModel();
superModelCell.setData(object+"");
superModelRowList.add(superModelCell);
superModelRow.setChildSuperModel(superModelRowList);
}
superModelTableList.add(superModelRow);
}
superModelTable.setChildSuperModel(superModelTableList);
}

System.out.println(superModelTable);
return superModelTable;
}
}

<%@ 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="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<html>

<head>

<title>Insert title here</title>

</head>

<body>

<table>

<c:forEach items="${superModelTable.childSuperModel}" var="superModelTableList">

<tr>

<c:forEach items="${superModelTableList.childSuperModel}" var="superModelRow">

<td>

<c:out value="${superModelRow.data}"></c:out>

</td>

</c:forEach>

</tr>

</c:forEach>

</table>

</body>

</html>

Complex Element

2012-10-10T00:35:00.004+05:30

Complex Element

Complex Element : which element contains simple elements or other complex elements is call complex element.

We can create complex elements in two ways in xsd

1.creating complex type elements and using them

2.annoums complex element

1.creating complex type elements and using them

we can create a complex element in xsd by using "complexType" key word

as follows

we can resue the structure of the complex type (it is creating class in java)

compareing java class and complex type in xsd.

Class in java	Complex Type in xsd
Class name_of_class { //statements }	<complexType name=”name_of_complex _type”> <sequence/all> //simple elements </sequence/all> </complexType>
class ItemType { String itemcode; int quantity; }	<complexType name="itemtype"> <sequance> <element name="itemcode" type="string"/> <element name="quantity" type="int"/> </sequance> </complexType>
ItemType item=new ItemType();	<element name=”item” type=”itemtype”>

Structure:

//simple elements or complex elements

</sequance/all>

</complexType>

Example:

complexType which contains simple elements

</sequance>

</complexType>

complexType which contains complex elements

</sequance>

</complexType>

XML Well Form

2012-10-10T00:31:00.001+05:30

XML Well Form

For well formed XML we follow the following rules.

Well form talks about the structure of the xml document

Rules:

· XML file should start with prolog (optional)

· Only one root tag is allowed

· All the elements (tags) must be under Root Tag only

· Every stating tag must have ending tag (closing tag)

· The level of opening tag must be closed the same level

· XML tags are case sensitive i.e <Tag> and <tag> both are treated as different tags

Demo:

File Name: Demo.xml

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

<ITEMCODE>NOKIA345</ITEMCODE>

</ITEM><!- closing tag at level 2 -->

</ORDERITEMS> <!- closing tag at level 1 -->

<DORNO>77-98</DORNO><!- opening and closing tag at level 2 --> <STREAT>GOPALNAGAR</STREAT><!- opening and closing tag at level 2 -->

</SHIPPINGADDRESS><!- closing tag at level 1 -->

</PURCHAGEORDER><!- closing tag at level 0 -->

Note: above demo.xml file satisfy’s all the rules so its call well formed xml

1. For checking is well formed or not open in the browser, if its shows the above content as it we wrote

Otherwise it shows the error where and what

2. use the xml spy tool check whether the xml is well formed or not

SIMPLE WEB SERVICE PROVIDER SIDE APPLICATION

2012-10-10T00:23:00.003+05:30

SIMPLE WEB SERVICE PROVIDER SIDE APPLICATION

Requirement:

Develop a web service provider side application which, provide complete information about a book by giving a book name as input.

Web service development environment:

1. Using Jax-rpc api si (sun implementation)

2. Contract as last

3. Synchronous reply/response message exchange pattern

4. rpc-encoded

5. servlet end-point

Software requirements:

1. java 1.5.0_22and java 1.6.0 in between

2. jax-rpc specific jar files

3. apache- tomcat 6.x serve

4. Jwsdp 2.0 tool

Development procedure:

Step 1:

Create a dynamic project in eclipse as follows.

File->New->Others->Dynamic web project

Give the project name and set server as tomcat

project Name: bookproject

Create a package under project : bookproject as shown

Package name: com.bookweb.service

Step 2:

Copy the all jax-rpc specific jar files into lib folder.

Step 3:

Create a SEI interface as follows

Interface name: BookInterface

package com.bookweb.service;

import java.rmi.Remote;

import java.rmi.RemoteException;

public interface BookInterface extends Remote {

float getBookPrice(String isbn) throws RemoteException;

}

Step 4:

Implemented class name: BookImpl.java

Provide implementation for SEI interface, which is full fill our business requirements

package com.bookweb.service;

import java.rmi.RemoteException;

public class BookImpl implements BookInterface {

public float getBookPrice(String isbn) throws RemoteException {

float bookprice=0.0f;

if(isbn.equals("java"))

bookprice=234.56f;

return bookprice;

}

Step 5:

Write a configuration file under WEB-INF folder as following tags

Configuration file name: config.xml

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

<service name="BookInfoService"

targetNamespace="http://bookinfoservice.org/wsdl"

typeNamespace="http://bookinfoservice.org/types"

packageName="com.bookweb.service.binding">

<interface name="com.bookweb.service.BookInterface"

servantName="com.bookweb.service.BookImpl" />

</service>

</configuration>

Step 5:

Install jwsdp2.0 tool

Set path for bin as C:\Sun\jwsdp-2.0\jaxrpc\bin

Run wscompile.bat with following options and pass config.xml as input

C:\Users\sant\workspace\BookService>wscompile -keep -verbose -gen:server -d src

-cp build\classes -model model-rpc-enc.xml.gz WebContent\WEB-INF\config.xml

It will generates wsdl file and model files and saxparsers and java classes

Move the wsdl and model file into WEB-INF folder

Step 5:

Write one more configuration file jax-rpc.xml (file name with same name only) under WEB-INF

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

<webServices

xmlns="http://java.sun.com/xml/ns/jax-rpc/ri/dd"

version="1.0"

targetNamespaceBase="http://bookinfoservice.org/wsdl"

typeNamespaceBase="http://bookinfoservice.org/types"

urlPatternBase="/getBookPrice">

<endpoint

name="booksriceservice"

displayName="Book Service"

description="A simple web service"

wsdl="/WEB-INF/BookInfoService.wsdll"

interface="com.bookweb.service.BookInterface"

implementation="com.bookweb.service.BookImpl"

model="/WEB-INF/model-rpc-enc.xml.gz">

</endpoint>

<endpointMapping

endpointName="booksriceservice"

urlPattern="/getBookPrice"/>

</webServices>

Step 6:

Export project as .war file

Give the war as input to the wsdeploy.bat

C:\wsdeploy –o taget.war bookproject.war

It generates the jax-rpc-runtime.xml and web.xml

Copy the same file into the project WEB-INF folder

Step 7:

Deploy the project in server and run the server and provide the url;

url : http://localhost:8080/bookproject/getBookPrice

output as follows:

Web Services

Port Name

Status

Information

booksriceservice

ACTIVE

Address:	http://localhost:8080/bookproject/getBookPrice
WSDL:	http://localhost:8080/bookproject/getBookPrice?WSDL
Port QName:	{http://bookinfoservice.org/wsdl}BookInterfacePort
Remote interface:	com.bookweb.service.BookInterface
Implementation class:	com.bookweb.service.BookImpl
Model:	http://localhost:8080/bookproject/getBookPrice?model

2012-05-19T10:16:00.000+05:30

public access modifier

RULE: public is key word and it is an access modifier, we can apply this modifier for classes,methods and variables .

we can access from the program and out side of the program of out side packages.

Recommended for classes and method but not variables.

Demo:

package demo.publ;

public class DemoPublic

{

public methodDemo

{

System.out.println("public method in demo.publi.Demopublic");

}

package demo.pub2;

import demo.publi.DemoPublic;

public class UsePublic

{

public static void main(String at[])

{

Demopublic p=new Demopublic();

p.methodDemo();

}

multiple upload files

2012-04-18T15:05:00.001+05:30

    package com.mp.ws;

    /**
    *
    * @author nitinaggarwal
    *
    */
    public interface IFileUpload {

    public byte[] get1File(String name);

    public byte[][] getMulitpleFiles(String names[]);

    public String getXmlFile(String name);

    }

    package com.mp.ws;

    /**
    *
    * @author nitinaggarwal
    *
    */
    public class FileUpload implements IFileUpload {

    public byte[] get1File(String name) {
    byte data[] = null;

    FileReader fr = new FileReader();
    try {
    data = fr.readBinFilePath(name);
    } catch (Exception e) {
    e.printStackTrace();
    }

    return data;
    }

    public String getXmlFile(String name) {
    String data = null;
    FileReader fr = new FileReader();
    try {
    data = fr.readTextFile(name);
    } catch (Exception e) {
    e.printStackTrace();
    }
    return data;
    }

    public byte[][] getMulitpleFiles(String[] fnames) {

    byte[][] data = new byte[fnames.length][];
    for (int i = 0; i < fnames.length; i++) {
    FileReader fr = new FileReader();
    try {
    data[i] = fr.readBinFilePath(fnames[i]);

    System.out.println("abc" + data[i]);
    } catch (Exception e) {
    e.printStackTrace();
    }
    }
    return data;
    }

    }

    package com.mp.ws;

    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;

    /**
    *
    * @author nitinaggarwal
    *
    */
    public class FileReader {

    public String readTextFile(final String name) throws Exception {
    StringBuffer xmlFromFile = new StringBuffer();
    InputStream instr = null;
    //instr = getFilePath2(name);

    instr = new FileInputStream(name);

    if (instr == null)
    throw new FileNotFoundException();
    InputStreamReader streamreader = null;

    try {

    streamreader = new InputStreamReader(instr);
    int x = 0;
    x = streamreader.read();

    while (x != -1) {
    xmlFromFile.append((char) x);
    x = streamreader.read();

    }

    } catch (Exception e) {

    System.out.println("Exception " + e.getMessage());
    throw e;

    } finally {
    streamreader.close();

    }

    return xmlFromFile.toString();

    }

    public byte[] readBinFileFromClassPath(final String name) throws Exception {

    byte bytearray[] = null;
    FileInputStream fileinputstream = null;
    try {

    fileinputstream = new FileInputStream(getFilePath(name));
    int numberBytes = fileinputstream.available();
    bytearray = new byte[numberBytes];
    fileinputstream.read(bytearray);

    } catch (Exception e) {
    System.out.println("Exception " + e.getMessage());
    throw e;

    } finally {
    if (fileinputstream != null)
    fileinputstream.close();
    }

    return bytearray;
    }

    public byte[] readBinFilePath(final String name) throws Exception {

    byte bytearray[] = null;
    FileInputStream fileinputstream = null;
    try {

    fileinputstream = new FileInputStream(name);
    int numberBytes = fileinputstream.available();
    bytearray = new byte[numberBytes];
    fileinputstream.read(bytearray);

    } catch (Exception e) {
    System.out.println("Exception " + e.getMessage());
    throw e;

    } finally {
    if (fileinputstream != null)
    fileinputstream.close();
    }

    return bytearray;
    }

    public void writeBinFileToPath(String name, byte data[]) throws IOException {

    FileOutputStream fileoutputstream = new FileOutputStream(name);

    try {
    fileoutputstream.write(data);

    } catch (IOException e) {
    System.out.println(e.getMessage());

    } finally {
    if (fileoutputstream != null)
    fileoutputstream.close();
    data = null;
    }

    }

    private InputStream getFilePath2(String filename) {
    return this.getClass().getClassLoader().getResourceAsStream(filename);

    }

    private String getFilePath(String filename) throws FileNotFoundException {
    String path = this.getClass().getClassLoader().getResource(filename)
    .getPath();
    if ("".equals(path))
    throw new FileNotFoundException();
    return path;

    }

    }

    package com.mp.ws;

    /**
    *
    * @author nitinaggarwal
    *
    */
    @javax.jws.WebService(targetNamespace = "http://ws.mp.com/", serviceName = "FileUploadService", portName = "FileUploadPort")
    public class FileUploadDelegate {

    com.mp.ws.FileUpload fileUpload = new com.mp.ws.FileUpload();

    public byte[] get1File(String name) {
    return fileUpload.get1File(name);
    }

    public byte[][] getMulitpleFiles(String[] fnames) {
    return fileUpload.getMulitpleFiles(fnames);
    }

    public String getXmlFile(String name) {
    return fileUpload.getXmlFile(name);
    }

    }

    package com.mp.ws;
    /**
    *
    * @author nitinaggarwal
    *
    */
    public class FileUploadTester {

    public static void main(String[] args) {
    FileUpload fu = new FileUpload();
    String fnames[]= {"c:/uploadme.doc","c:/uploadme.doc","c:/uploadme.doc"};

    byte[][] data = fu.getMulitpleFiles(fnames);

    }
    }

multiple file upload helpful website urls

2012-04-18T15:03:00.001+05:30

1. http://digitarald.de/project/fancyupload/
2. http://swfupload.org
3. http://jupload.sourceforge.net/
4. http://jumploader.com/
5. http://code.google.com/apis/gears/samples/hello_world_file_system.html
6. http://www.telerik.com/products/aspnet-ajax/upload.aspx#uploading-files
7. http://www.element-it.com/multiple-file-upload/flash-uploader.aspx
8. http://stackoverflow.com/questions/582126/best-way-to-upload-multiple-files-from-a-browser

arithmetic operators

2012-01-25T12:45:00.001+05:30

//arthemetic operators using switch

import java.io.*;

class Input2

{

public static void main(String[] args)throws IOException

{

char ch;

InputStreamReader ir=new InputStreamReader(System.in);

BufferedReader br=new BufferedReader(ir);

System.out.println("enter values of x");

int x=Integer.parseInt(br.readLine());

System.out.println("enter values of y");

int y=Integer.parseInt(br.readLine());

System.out.println("enter u r choice");

System.out.println("+ for additon");

System.out.println("- for subtraction");

System.out.println("/ for divide");

System.out.println("* for multipiy");

System.out.println("% for remainder");

ch=(char)br.read();

switch(ch)

{

case '+':

System.out.println("additon:"+(x+y));

break;

case '-':

System.out.println("sub:"+(x-y));

break;

case '*':

System.out.println("mul:"+(x*y));

break;

case '/':

System.out.println("divide:"+(x/y));

break;

case '%':

System.out.println("Remainder:"+(x%y));

break;

}

Reading an integer from keyboard

2012-01-25T12:43:00.001+05:30

// input from key board

import java.io.*;

class Inputint

{

public static void main(String r[])throws IOException

{

InputStreamReader id=new InputStreamReader(System.in);

BufferedReader br=new BufferedReader(id);

System.out.println("enter a interger");

int s=Integer.parseInt(br.readLine());

System.out.println("enter "+s);

}

reading a string from keyboard

2012-01-25T12:38:00.001+05:30

// input from key board
import java.io.*;
class Inputstring
{
public static void main(String r[])throws IOException
{
//InputStreamReader id=new InputStreamReader(System.in);
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("enter a String vslue");
String s=br.readLine();
System.out.println("enter "+s);
}
}

2012-01-25T12:24:00.000+05:30

Simple AJAX Program

Simple AJAX application using java script and JSP.

Files required.

1. ajax.js
2. mainpage.jsp
3. process.jsp
4. web.xml

Code :

1. ajax.js

var xmlHttp;
function postRequest(url) {

if (window.XMLHttpRequest) { // Mozilla, Safari, ...
//alert("other than IE");
xmlHttp = new XMLHttpRequest();

} else if (window.ActiveXObject) { // IE
//alert("IE only");
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");

}

xmlHttp.open('POST', url, true);
xmlHttp.onreadystatechange = function() {

if (xmlHttp.readyState == 4) {
updatepage(xmlHttp.responseText);

}

}

xmlHttp.send(url);

}

function updatepage(str){

document.getElementById("result").innerHTML = "<font color='green' size='15'>" + str + "</font>";

}

function showCurrentTime(){

var url="process.jsp";
postRequest(url);

}

2. mainpage.jsp

<%@ page import="java.util.*" %>
<html>
<head>

<title>Ajax Example</title>
<script type="text/javascript" src="ajax.js"> </script>
</head>

<body>

<h1 align="center"><font color="#000080">Ajax Example</font></h1>
<%
out.println(new Date());
%>
<p><font color="#000080"> This very simple Ajax Example retrieves the
current date and time from server and shows on the form. To view the current
date and time click on the following button.</font></p>

<form name="f1">

<p align="center"><font color="#000080"> <input value=" Show Time "
type="button" onclick='JavaScript:showCurrentTime()' name="showdate"></font></p>
<div id="result" align="center"></div>

</form>
<div id=result></div>
</body>

</html>

3. process.jsp

<%@ page import="java.util.*" %>
<%
out.println(new Date());
%>

4. 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>AjaxApp1</display-name>

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

</welcome-file-list>
</web-app>

2012-01-25T12:23:00.001+05:30

Simple AJAX program with struts 1.2

Files required :

1. ajax.js
2. search.jsp
3. web.xml
4. struts-config.xml
5. SearchForm.java
6. SearchAction.java

Code for running the program :

1. ajax.js

var request;

function createObject() {

if (window.XMLHttpRequest) { // Mozilla, Safari, ...

//alert("other than IE");

request = new XMLHttpRequest();

} else if (window.ActiveXObject) { // IE

//alert("IE only");

request = new ActiveXObject("Microsoft.XMLHTTP");

}

function search() {

createObject();

var name=window.document.getElementById("n").value;

var url="search.do?name="+name;

request.open('GET',url,true);

request.send(url);

request.onreadystatechange= callback();

}

function callback() {

if (request.readyState == 4) {

displayInfo(request.responseText);

}

function displayInfo(str) {

/*This function is only for testing, not working*/

}

2. search.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">
<%@ page import="java.util.*" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Search Page</title>
<script type="text/javascript" src="ajax.js">
</script>
</head>
<body>
<table>
<form action="search.do">
<tr>
<td>Enter name Here : </td>
<td><input id="n" type="test" name="name" onkeyup="search()"/></td>
</tr>
<div id="results"></div>
</form>
</table>
</body>
</html>

3. web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name />
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>search.jsp</welcome-file>
</welcome-file-list>

</web-app>

4. struts-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
<form-beans>
<form-bean name="searchForm" type="com.search.SerachForm"></form-bean>
</form-beans>
<action-mappings>
<action path="/search" name="searchForm" type="com.search.SearchAction">
<forward name="success" path="/search.jsp"></forward>
</action>
</action-mappings>
</struts-config>

5. SearchForm.java

package com.search;

import org.apache.struts.action.ActionForm;

public class SerachForm extends ActionForm {
private String name;

public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}

6. SearchAction.java

package com.search;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public class SearchAction extends Action{
/*
* author : Chandrasekhara Kota
* Date : 03-Dec-2011
* Email : chandunaidu.kota@gmail.com
* */

public ActionForward execute(ActionMapping am, ActionForm af, HttpServletRequest req, HttpServletResponse res)throws Exception
{
System.out.println("---------------inside the action------------------"+req.getParameter("name"));

return am.findForward("success");
}
}

static variable

2012-01-23T16:28:00.000+05:30

/*
static most powerful and beautiful concept in java .if use static, jvm will load at the time of class load.
if we use static for a variable it treated as class level variable for every new object will not create new variable existing only used.
*/

public class Static_Variable
{
static String collegename="ghandi college";
public void method1()
{
//incomplete
}
}

static NOT applicable with modifiers

2012-01-23T16:14:00.000+05:30

/*
RULE: static keyword not applicable with the
1.final
2. abstract
and class

*/

static applicable

2012-01-23T16:05:00.000+05:30

/*
RULE: static keyword only applicable for variables , methods and block but not for classes
*/

public class Static_Demo
{
static int x=10;
static
{
System.out.println(x);
}
public static void main(String arg[])
{
System.out.println("static main method")
}
}

public class

2012-01-23T15:57:00.000+05:30

/*
RULE: if we declared a class as public, we can access that class from any where
*/

public class Public_Class
{

}