student's zone

Industrial Training For Diploma Students

noreply@blogger.com (Mnaoj Joshi) — Thu, 6 Aug 2015 14:43:00 +0530

Industrial Training For Diploma Students
IT Solutions & Services an IT Company providing Industrial Training to IT Students of Polytechnic and ITI.
It is very necessary to understand and learn how to work in a corporate environment.
It is very good chance for the students who want to get experience in IT sector.

Students who are interested in doing industrial training kindly send your resume on info@itssin.co.in

DATE OF EXAM OF DELHI POLYTECHNIC - QUESTION FORMAT OF CET 2014

noreply@blogger.com (Mnaoj Joshi) — Sat, 10 May 2014 02:51:00 +0530

TIME TABLE FOR CET - 2014

Test-1

All 10th based Diploma

Courses. Engg/Non Engg

08-06-2014 10 A.M. to

12.30 P.M.

Mathematics-(50 Questions), Physics (40

Questions), Chemistry (30 Questions),

Biology (15 Questions) & English (15

Questions) as per CBSE syllabus for class

IX Exam held in 2013 and CBSE syllabus for

class X exam held in 2014.

Total No. of Questions : 150

Test-2 Modern Office Practice –

English (12th based)

08-06-2014 2 P.M. to

4.30 P.M.

Comprehension of English including

Grammar (60 Questions) of class XII level,

Knowledge of Current Affairs (45 Questions)

and Logical & Analytical Ability (45

Questions)

Total No. of Questions : 150

Test-3 Modern Office Practice – Hindi

(12th based)

07-06-2014 10 A.M. to

12.30 P.M

Comprehension of Hindi including Grammar

(60 Questions) of class XII level, Knowledge

of Current Affairs (45 Questions) and Logical

& Analytical Ability (45 Questions)

Total No. of Questions : 150

Test-4 Pharmacy

(12th based)

08-06-2014 2 P.M. to

4.30 P.M.

Physics (45 Questions), Chemistry (45

Questions) & either Mathematics (60

Questions) or Biology (60 Questions) as per

CBSE syllabus for class XI Exam held in

2013 and CBSE syllabus for Class XII Exam

held in 2014.

Total No. of Questions : 210 Questions to be

answered 150 ( Physics, Chemistry,

Biology/Mathematics )

Test-5

Lateral entry of ITI/

10+2(Vocational Stream) pass

outs for admission to the 3rd

semester in analogous

Diploma courses.

07-06-2014 10 A.M. to

12.30 P.M

Physics (60 Questions)

Mathematics (60 Questions)

Chemistry-(30 Questions) as per CBSE

Syllabus for class X exam held in 2012, class

XI exam held in 2013 and class XII exam

held in 2014

Total No. of Questions : 150

Delhi Polytechnic CET 2014 Admit Card

noreply@blogger.com (Mnaoj Joshi) — Fri, 9 May 2014 04:45:00 +0530

Issue of online Admit Card: The exact information pertaining to issue of admit card shall be displayed on the website

http://www.cetdelhiexam.nic.in . The registered candidates can download the admit card showing the roll no. and Centre
details by logging onto the site http://www.cetdelhiexam.nic.in approximately one week before the date of CET 2014
examination .
The candidates are advised to check the website regularly for updates.
Admit Card should be retained by the candidate till the Department of Training & Technical Education finalizes the
admissions.
No duplicate admit card will be issued by the Controller CET 2014 after the Entrance test.

Delhi polytechnic Online Form 2014 - CET Delhi

noreply@blogger.com (Mnaoj Joshi) — Tue, 15 Apr 2014 23:45:00 +0530

People were searching for delhi polytechnic form for many days but this year delhi polytechnic has started its online form for common entrance test.
This is very easy to submit delhi polytechnic form online you have to just visit the Delhi Polytechnic website http://www.cetdelhiexam.nic.in and apply online.

You can Simply cilck on below given Link

Delhi Polytechnic Online Form

Career in Web Designing After Polytechnic Diploma

noreply@blogger.com (Mnaoj Joshi) — Fri, 23 Aug 2013 00:03:00 +0530

After diploma in computer Science or Information Technology (IT) students always get worried about their career. They have to choose a right field in IT to move forward. Web Designing is a good Option for those student you really want to avoid jobs like Hardware Networking, IT support, Voice support, BPO jobs etc. Website Designing is becoming more popular day by day. Everyone who has small or big business want to publish it on internet and it is not plausible witjout having a good website.
Most common question asked by people that how much will be salary after completion of Diploma.

The answer is if choose web designing as a career being a fresher then the salary would be approximately 8-10k it depends on the knowledge of the student.

Career in Search Engine Optimization

noreply@blogger.com (Mnaoj Joshi) — Fri, 16 Aug 2013 13:10:00 +0530

Search Engine Optimization is the technique to increase the organic ranking of any website in SERP.
SERP (Search engine result Page) Basically shows the result for top Matching website for any typed keywords in search box.

SEO Service (Search Engine Optimization service) is being popular day by day. People or businesses are hiring professional SEO Freelancer or SEO Company to increase their website Ranking on most popular search engines GOOGle, Yahoo, Bing, MSn etc.

For a Diploma Student SEO could be an good option to choose it as a career. Now days many of the SEO Firms hiring Freshers for SEO having basic knowledge of SEO.

Starting salary for a good candidate in SEO is 8-10K.

Delhi Polytechnic - Income certificate needed for OBC Candidates

noreply@blogger.com (Mnaoj Joshi) — Mon, 15 Jul 2013 12:56:00 +0530

Important Notice by Delhi polytechnic for all OBC Candidates applied for Delhi Polytechnic 2013

Candidates who have OBC (non-creamy layer) certificate issued by the competent authority before 01/09/2012 need to submit the income certificate for the current year issued by the competent authority latest by 24 July 2013. No further relaxation/ extension of time will be given. Candidates will be given provisional admission subject to the submission of an affidavit & undertaking as per the formats given here.

Fill and Check CET registration form Carefully - CET 2013

noreply@blogger.com (Mnaoj Joshi) — Mon, 15 Jul 2013 11:12:00 +0530

CET Delhi 2013 1st counseling result has been out and selected candidates are completing their further admission formalities.
for those candidates who are not selected in first round they have one more chance to get selected. The registration process for 2nd round of CET Delhi 2013 is going and students are requested to fill their registration form carefully because once register period has over they cant cahnge anything.
So please filly everything carefully fill your option and lock them correctly.

Delhi Polytechnic first cut Off

noreply@blogger.com (Mnaoj Joshi) — Tue, 9 Jul 2013 17:24:00 +0530

Delhi Polytechnics first counseling result has been announced on 5th July 2013. the cut off of First counseling is as below:

Inst_Name	Course_Name	Cat	SubCat	Descripition	Max_rank
AdityaInstituteofTechnology-(Pvt)	ComputerEngineering	GN	GN	Delhi	4163
AdityaInstituteofTechnology-(Pvt)	ComputerEngineering	GN	GN	OutsideDelhi	1698
AdityaInstituteofTechnology-(Pvt)	ComputerEngineering	OBC	GN	Delhi	8327
AdityaInstituteofTechnology-(Pvt)	ComputerEngineering	OBC	GN	OutsideDelhi	2734
AdityaInstituteofTechnology-(Pvt)	ComputerEngineering	SC	GN	Delhi	7553
AdityaInstituteofTechnology-(Pvt)	ComputerEngineering	SC	GN	OutsideDelhi	11544
AdityaInstituteofTechnology-(Pvt)	ComputerEngineering	SU	DP	Delhi	26787
AdityaInstituteofTechnology-(Pvt)	ComputerEngineering	SU	PH	Delhi	12022
AdityaInstituteofTechnology-(Pvt)	ComputerEngineering-TFW	SU	TFW	Delhi	6085
AdityaInstituteofTechnology-(Pvt)	ElectronicsandCommunicationEngineering	GN	GN	Delhi	4806
AdityaInstituteofTechnology-(Pvt)	ElectronicsandCommunicationEngineering	GN	GN	OutsideDelhi	1374
AdityaInstituteofTechnology-(Pvt)	ElectronicsandCommunicationEngineering	OBC	GN	Delhi	9095
AdityaInstituteofTechnology-(Pvt)	ElectronicsandCommunicationEngineering	OBC	GN	OutsideDelhi	2047
AdityaInstituteofTechnology-(Pvt)	ElectronicsandCommunicationEngineering	SC	GN	Delhi	7774
AdityaInstituteofTechnology-(Pvt)	ElectronicsandCommunicationEngineering	SC	GN	OutsideDelhi	12888
AdityaInstituteofTechnology-(Pvt)	ElectronicsandCommunicationEngineering	SU	PH	Delhi	43820
AdityaInstituteofTechnology-(Pvt)	ElectronicsandCommunicationEngineering-TFW	SU	TFW	Delhi	12068
AdityaInstituteofTechnology-(Pvt)	ITEnabledServicesandManagement	GN	GN	Delhi	6010
AdityaInstituteofTechnology-(Pvt)	ITEnabledServicesandManagement	GN	GN	OutsideDelhi	3923
AdityaInstituteofTechnology-(Pvt)	ITEnabledServicesandManagement	OBC	GN	Delhi	12347
AdityaInstituteofTechnology-(Pvt)	ITEnabledServicesandManagement	OBC	GN	OutsideDelhi	4346
AdityaInstituteofTechnology-(Pvt)	ITEnabledServicesandManagement	SC	GN	Delhi	10313
AdityaInstituteofTechnology-(Pvt)	ITEnabledServicesandManagement	SC	GN	OutsideDelhi	16829
AdityaInstituteofTechnology-(Pvt)	ITEnabledServicesandManagement	SU	DP	Delhi	17346
AdityaInstituteofTechnology-(Pvt)	ITEnabledServicesandManagement	SU	PH	Delhi	44168
AdityaInstituteofTechnology-(Pvt)	ITEnabledServicesandManagement-TFW	SU	TFW	Delhi	13010
AdityaInstituteofTechnology-(Pvt)	JKSeat	GN	JK	Delhi	21938
AdityaInstituteofTechnology-(Pvt)	MedicalLabTech	GN	GN	Delhi	6711
AdityaInstituteofTechnology-(Pvt)	MedicalLabTech	OBC	GN	Delhi	12927
AdityaInstituteofTechnology-(Pvt)	MedicalLabTech	OBC	GN	OutsideDelhi	5507
AdityaInstituteofTechnology-(Pvt)	MedicalLabTech	SC	GN	Delhi	10717

Telecom Service & Management-Download sample Paper Of BTE DELHI

noreply@blogger.com (Mnaoj Joshi) — Wed, 28 Dec 2011 20:06:00 +0530

Download Sample Paper E-Commerce & M-Commerce - BTE Delhi- Delhi Polytechnic

noreply@blogger.com (Mnaoj Joshi) — Tue, 20 Dec 2011 15:40:00 +0530

Download Sample Paper Of Cyber Security & Cyber Laws - Delhi Polytechnic - B.T.E Delhi

noreply@blogger.com (Mnaoj Joshi) — Tue, 20 Dec 2011 15:28:00 +0530

Cyber Security & Cyber Law

Sample paper of Computer Graphics - B.T.E Delhi- (Delhi Polytechnic)

noreply@blogger.com (Mnaoj Joshi) — Thu, 1 Dec 2011 12:48:00 +0530

computer graphics (Delhi polytechnic sample paper)

B2B vs. B2C

noreply@blogger.com (Mnaoj Joshi) — Fri, 9 Sep 2011 14:13:00 +0530

B2B vs. B2C
       The basic difference between B2B and B2C is that in B2B the customers are companies where as in B2C the customers are individuals.
       B2B transactions are more complex as compared to B2C transactions.
       B2B transactions involve lot of negotiations over price, delivery and product specifications. B2C transactions, on the other hand, involve a specific product, price and mode of delivery.
       B2B transactions require integration with the other companies' systems. This is important for communication. B2C on the other hand does not require any integration with their customers.
       B2C transactions are mostly done through credit cards. B2B transaction on the other hand may require setting up an account with the company.
       B2B and B2C require different marketing strategies. B2C customers do online price comparisons between competing B2B sites for the best possible price.
       The sales process takes a longer time for B2B Company than for a B2C company.
       B2B websites sell big value items or services. Their products are specialised and specific. B2C websites sell small items and mostly one time sale. B2B websites involve a long-term business relationship, support services, upgrades and modifications.
       B2B purchases require evaluating multiple factors. They require much more research, thought and analysis before a purchase is made. The B2C purchase process, on the other hand is fairly simple. It mostly involves price comparisons between competitors before the purchase. This is a quick and easy job on the Internet.
       B2B websites provide lot more information as compared to B2C websites. They require presentation of information in a concise and detailed format. The client may need concise information to know about the products and then detailed information to decide on purchasing it.
       Good content is the prerequisite for the success of both B2B and B2C sites. Content on a B2B site is more technical in nature while content on a B2C site is more general and in a layman's language.
       B2C website users mostly use the product themselves. They alone complete the entire buying process on the site. The buying process on a B2B site may involve different people or departments at different stages of the buying process. So, a B2B site has to provide information that caters to people with varying needs and requirements. That is why B2B websites should be designed with usability in mind.
       One major difference between B2B and B2C websites is that most B2C websites do not have as shopping cart. This is because product and services sold on a B2B website require more presale discussion, price negotiation and customisation of the product before a sale is executed.
       B2C websites are more directly responsible for sales as compared to B2B websites. That is why B2C websites are more specific about e-commerce rules and practices.

E-Commerce and EDI (Electronic Data Interchange)

noreply@blogger.com (Mnaoj Joshi) — Fri, 9 Sep 2011 13:59:00 +0530

E-Commerce and EDI

Although it appears these two systems may not be able to play together, the opposite is true. In this current climate of utilizing all the technologies available to make businesses more accessible and more user friendly, EDI can combine with e-commerce to do just that. While EDI is well entrenched as a major framework in many larger businesses, it is also being adopted by smaller businesses to increase their ability to make trading partners. EDI provides a fast and efficient way to exchange information. Currently, there are standards known as AS2 which govern Internet EDI transactions. The use of EDI through Internet modes is becoming more popular, as it does not require the same amount of set-up, costs or applications as for bigger corporate enterprises.

The advantages of implementing EDI within the Internet environment, is that trading partners can be more efficiently and effectively communicated with, it reduces the amount of errors, and therefore improves cost effectiveness. It allows businesses to trade with larger enterprises that require EDI as a communication medium. Plus Internet EDI is relatively inexpensive, and does not carry with it the ongoing costs of other forms of EDI transmission. This can enable big and small companies to save potentially millions of dollars. Instead of mailing out catalogues and brochures, companies can send emails, and advise clients of discounts, and allow them to download information from the Internet.

This is made possible by EDI, which also allows retailers and distributors to have speedily and reliable communications. Retailers can easily determine product availability of a distributor prior to placing an order. If the distributor is out of stock temporarily, the order can be passed directly to the manufacturer, with the distributor receiving credit for the sale. When products are drop-shipped to retailers and distributors, an automatic requires for their stocking requirements can be generated. Orders are encrypted for Internet transmission and then converted to EDI format for internal processing. Thus EDI has become and integral part of business which has evolved from transactions between businesses, to those between individuals and businesses. It enables a certain level of interactivity, which creates closer relationships between all parties involved.

The EDI standards were designed to be independent of communication and software technologies. EDI can be transmitted using any methodology agreed to by the sender and recipient. This includes a variety of technologies, including modem (asynchronous, and bisynchronous), FTP, E-mail, HTTP, AS1, AS2, etc. It is important to differentiate between the EDI documents and the methods for transmitting them

There are four major sets of EDI standards:

The UN-recommended UN/EDIFACT is the only international standard and is predominant outside of North America.
The US standard ANSI ASC X12 (X12) is predominant in North America.
The TRADACOMS standard developed by the ANA (Article Numbering Association) is predominant in the UK retail industry.
The ODETTE standard used within the European automotive industry

All of these standards first appeared in the early to mid 1980s. The standards prescribe the formats, character sets, and data elements used in the exchange of business documents and forms. The complete X12 Document List includes all major business documents, including purchase orders (called "ORDERS" in UN/EDIFACT and an "850" in X12) and invoices (called "INVOIC" in UN/EDIFACT and an "810" in X12).

The EDI standard says which pieces of information are mandatory for a particular document, which pieces are optional and give the rules for the structure of the document. The standards are like building codes. Just as two kitchens can be built "to code" but look completely different, two EDI documents can follow the same standard and contain different sets of information. For example a food company may indicate a product's expiration date while a clothing manufacturer would choose to send color and size information.

Internet Commerce, It's Opportunities and Benefits

noreply@blogger.com (Mnaoj Joshi) — Fri, 9 Sep 2011 13:57:00 +0530

What is Internet Commerce?

Internet Commerce is the use of the Internet for all phases of creating and completing business transactions. Various surveys suggest that the amount of business conducted online will increase ten-fold over the next few years, from around $500 million in 1996 to over $6 billion in 2000. However, this still represents less than 10 per cent of the business conducted by mail order.

In our view too much focus of electronic commerce to date has been put on carrying out the final transactional phases - the ordering and payment. While such a perspective is all right when there are established supply chains for regular and routine purposes, this overlooks the wider perspective. It is often said, that the formal placement of an order is preceded by as many as 30 previous information exchanges. Thus, in its broadest sense we view Internet Commerce as also including:

The full sales and marketing cycle - for example, by analysing online feedback to ascertain customer's needs
Identifying new markets - through exposure to a global audience through the World Wide Web
Developing ongoing customer relationships - achieving loyalty through ongoing email interaction
Assisting potential customers with their purchasing decision - for example by guiding them through product choices in an intelligent way
Providing round-the-clock points of sale - making it easy for buyers to order online, irrespective of location
Supply Chain Management - supporting those in the supply chain, such as dealers and distributors, through online interaction
Ongoing Customer Support - providing extensive after-sales support to customers by online methods; thus increasing satisfaction, deepening the customer relationship and closing the selling loop through repeat and onging purchases.

This wider perspective of Internet Commerce - as an ongoing iterative relationship that uses email, discussion lists, and other Internet facilities as well as the World Wide Web - is the strategy of most successful 'Netrepreneurs'. As in other marketing, the main categories of Internet Commerce are business-to-business and business

Opportunities and Benefits

Those who trade via the Internet cite the following benefits:

Timeliness - Your Web site is accessible round the clock. Email queries can be handled more expeditiously and completely than is often possible by mail or phone.
Reduced Marketing Costs - Online catalogues are cheapre to produce and maintain that paper catalogues.
Better Targetting - Internet communities are self selecting. People with particular interests tend to visit particaulr places in Cyberspace. Customers find you, rather than vice versa.
Greater Market Reach - Distance is no object. Sending information or exchanging messages costs virtually the same as someone locally. You don't need to pay expensive courier bills.
Reduced communications costs - With electronic networking it cost virtually the same to send a message to 100 people as to one.
Improved After Sales Service - By providing online support, customers can serve themselves for many of the common post-sales information needs.

There are particular opportunities for those who have specialised markets, or wish to expand their market base without the cost of opening new offices. There are also opportunities created by the medium itself - for example for Internet intermediaries (directory and trading services), and novel ways of providing access e.g. kiosks in public areas.

IIT dwarka Sec-9 (INTEGRATED INSTITUTE OF TECHNOLOGY) NEW DELHI-110077

noreply@blogger.com (Mnaoj Joshi) — Thu, 16 Jun 2011 10:37:00 +0530

Integrated Institute Of Technology

Integrated Institute of Technology (IIT Dwarka sec-9) is an Engineering Institute established in 2008 under Department of Training and Technical Education, Govt. of Delhi , affiliated by AICTE (All India Council For Technical Education).
The campus is completely self-reliant and built up as per the norms prescribed by All India Council for Technical Education for conducting Diploma programmes .

Institute is located at Dwarka Sec-9 New Delhi-110077, Near Dwarka Court.Near Dwarka sec-10 Metro station.

Tel: 011-25080585
Fax: 011-25080585

student's zone: Integrated Institute Of Technology

noreply@blogger.com (Mnaoj Joshi) — Thu, 9 Jun 2011 19:41:00 +0530

student's zone: Integrated Institute Of Technology

Integrated Institute Of Technology

noreply@blogger.com (Mnaoj Joshi) — Thu, 9 Jun 2011 19:40:00 +0530

Integrated Institute Of Technology

Cyber Crime

noreply@blogger.com (Mnaoj Joshi) — Sat, 28 May 2011 13:59:00 +0530

Java Basic Syntax

noreply@blogger.com (Mnaoj Joshi) — Thu, 19 May 2011 17:05:00 +0530

When we consider a Java program it can be defined as a collection of objects that communicate via invoking each others methods. Let us now look into what do class, object, methods and instant variables mean.

Object - Objects have states and behaviors. Example: A dog has states-color, name, breed as well as behaviors -wagging, barking, eating. An object is an instance of a class.
Class - A class can be defined as a template/ blue print that describe the behaviors/states that object of its type support.
Methods - A method is basically a behavior. A class can contain many methods. It is in methods where the logics are written, data is manipulated and all the actions are executed.
Instant Variables - Each object has its unique set of instant variables. An object.s state is created by the values assigned to these instant variables.

First Java Program:

Let us look at a simple code that would print the words Hello World.

public class MyFirstJavaProgram{

   /* This is my first java program.  
    * This will print 'Hello World' as the output
    */

    public static void main(String []args){
       System.out.println("Hello World"); // prints Hello World
    }
}

Lets look at how to save the file, compile and run the program.

Open notepad and add the code as above.
Save the file as : MyFirstJavaProgram.java.
Open a command prompt window and go o the directory where you saved the class. Assume its C:\.
Type ' javac MyFirstJavaProgram.java ' and press enter to compile your code. If there are no errors in your code the command prompt will take you to the next line.( Assumption : The path variable is set).
Now type ' java MyFirstJavaProgram ' to run your program.
You will be able to see ' Hello World ' printed on the window.

C : > javac MyFirstJavaProgram.java
C : > java MyFirstJavaProgram 
Hello World

Basic Syntax:

About Java programs, it is very important to keep in mind the following points.

Case Sensitivity - Java is case sensitive which means identifier Hello and hello would have different meaning in Java.
Class Names - For all class names the first letter should be in Upper Case.

If several words are used to form a name of the class each inner words first letter should be in Upper Case.

Example -class MyFirstJavaClass
Method Names - All method names should start with a Lower Case letter.

If several words are used to form the name of the method, then each inner word's first letter should be in Upper Case.

Example public void myMethodName()
Program File Name - Name of the program file should exactly match the class name.

When saving the file you should save it using the class name (Remember java is case sensitive) and append '.java' to the end of the name. (if the file name and the class name do not match your program will not compile).

Example : Assume 'MyFirstJavaProgram' is the class name. Then the file should be saved as 'MyFirstJavaProgram.java'
public static void main(String args[]) - java program processing starts from the main() method which is a mandatory part of every java program..

Java Identifiers:

All java components require names. Names used for classes, variables and methods are called identifiers.
In java there are several points to remember about identifiers. They are as follows:

All identifiers should begin with a letter (A to Z or a to z ), currency character ($) or an underscore (-).
After the first character identifiers can have any combination of characters.
A key word cannot be used as an identifier.
Most importantly identifiers are case sensitive.
Examples of legal identifiers:age, $salary, _value, __1_value
Examples of illegal identifiers : 123abc, -salary

Java Modifiers:

Like other languages it is possible to modify classes, methods etc by using modifiers. There are two categories of modifiers.

Access Modifiers : defualt, public , protected, private
Non-access Modifiers : final, abstract, strictfp

We will be looking into more details about modifiers in the next section.

Java Variables:

We would see following type of variables in Java:

Local Variables
Class Variables (Static Variables)
Instance Variables (Non static variables)

Java Arrays:

Arrays are objects that store multiple variables of the same type. However an Array itself is an object on the heap. We will look into how to declare, construct and initialize in the upcoming chapters.

Java Enums:

Enums were introduced in java 5.0. Enums restrict a variable to have one of only a few predefined values. The values in this enumerated list are called enums.
With the use of enums it is possible to reduce the number of bugs in your code.
For example if we consider an application for a fresh juice shop it would be possible to restrict the glass size to small, medium and Large. This would make sure that it would not allow anyone to order any size other than the small, medium or large.

Example:

class  FreshJuice{
   enum FreshJuiceSize{ SIZE, MEDUIM, LARGE }
   FreshJuiceSize size;
}

public class FreshJuiceTest{
   public static void main(String args[]){
      FreshJuice juice = new FreshJuice();
      juice.size = FreshJuice. FreshJuiceSize.MEDUIM ;
   }
}

Note: enums can be declared as their own or inside a class. Methods, variables, constructors can be defined inside enums as well.

Java Keywords:

The following list shows the reserved words in Java. These reserved words may not be used as constant or variable or any other identifier names.

abstract	assert	boolean	break
byte	case	catch	char
class	const	continue	default
do	double	else	enum
extends	final	finally	float
for	goto	if	implements
import	instanceof	int	interface
long	native	new	package
private	protected	public	return
short	static	strictfp	super
switch	synchronized	this	throw
throws	transient	try	void
volatile	while

Comments in Java

Java supports single line and multi-line comments very similar to c and c++. All characters available inside any comment are ignored by Java compiler.

public class MyFirstJavaProgram{

   /* This is my first java program.
    * This will print 'Hello World' as the output
    * This is an example of multi-line comments.
    */

    public static void main(String []args){
       // This is an example of single line comment
       /* This is also an example of single line comment. */
       System.out.println("Hello World"); 
    }
}

Using Blank Lines:

A line containing only whitespace, possibly with a comment, is known as a blank line, and Java totally ignores it.

Inheritance:

In java classes can be derived from classes. Basically if you need to create a new class and here is already a class that has some of the code you require, then it is possible to derive your new class from the already existing code.
This concept allows you to reuse the fields and methods of the existing class with out having to rewrite the code in a new class. In this scenario the existing class is called the super class and the derived class is called the subclass.

Interfaces:

In Java language an interface can be defined as a contract between objects on how to communicate with each other. Interfaces play a vital role when it comes to the concept of inheritance.
An interface defines the methods, a deriving class(subclass) should use. But the implementation of the methods is totally up to the subclass.

Java Environment Setup

noreply@blogger.com (Mnaoj Joshi) — Thu, 19 May 2011 17:00:00 +0530

Before we proceed further it is important that we set up the java environment correctly. This section guides you on how to download and set up Java on your machine. Please follow the following steps to set up the environment.
Java SE is freely available from the link Download Java. So you download a version based on your operating system.
Follow the instructions to download java and run the .exe to install Java on your machine. Once you installed Java on your machine, you would need to set environment variables to point to correct installation directories:

Setting up the path for windows :

Assuming you have installed Java in c:\Program Files\java\jdk directory:

Right-click on 'My Computer' and select 'Properties'.
Click on the 'Environment variables' button under the 'Advanced' tab.
Now alter the 'Path' variable so that it also contains the path to the Java executable. Example, if the path is currently set to 'C:\WINDOWS\SYSTEM32', then change your path to read 'C:\WINDOWS\SYSTEM32;c:\Program Files\java\jdk\bin'.

Setting up the path for windows 95/98/ME:

Assuming you have installed Java in c:\Program Files\java\jdk directory:

Edit the 'C:\autoexec.bat' file and add the following line at the end:
'SET PATH=%PATH%;C:\Program Files\java\jdk\bin'

Setting up the path for Linux, UNIX, Solaris, FreeBSD:

Environment variable PATH should be set to point to where the java binaries have been installed. Refer to your shell documentation if you have trouble doing this.
Example, if you use bash as your shell, then you would add the following line to the end of your '.bashrc: export PATH=/path/to/java:$PATH'

Popular Java Editors:

To write your java programs you will need a text editor. There are even more sophisticated IDE available in the market. But for now, you can consider :

Notepad : On Windows machine you can use any simple text editor like Notepad (Recommended for this tutorial), TextPad.
Netbeans :is a Java IDE that is open source and free which can be downloaded from http://www.netbeans.org/index.html.
Eclipse : is also a java IDE developed by the eclipse open source community and can be downloaded from http://www.eclipse.org/.

Server Benefits

noreply@blogger.com (Mnaoj Joshi) — Sun, 15 May 2011 18:45:00 +0530

#1 File and Network security
The most important role of a file server is the network security it provides. By creating individual user and group accounts, rights can be assigned to the data stored on the network preventing unauthorized users from accessing materials they shouldn't be viewing. For example, the sales team doesn’t need access to employee personal records which should only be accessible by HR.
#2 Increased reliability; decreased workflow interruptions
Many servers are equipped with redundant power supplies. With a secondary power supply running in tandem, the loss of one of the power supplies doesn't affect normal system operations. The same goes for a server's storage system. Unlike an average desktop PC that uses a single hard drive, a server will typically use multiple hard drives working in a RAID configuration to prevent data loss or an interruption in workflow. In addition, many servers are also equipped with hot swappable hard drives and power supplies. These hot swappable components allow you to replace faulty hardware without interrupting the entire office. In addition, since all employee data is being stored on the network, if a user's workstation fails mid-workday, employees can access the same files from another workstation.
#3 Centralized data storage and shared resources
With a network server, all of the users on the network can make use of various network resources right from their desks, increasing efficiently. Some of these resources include the following:
- Centralized data storage (RAID Array)
- Network Attached Storage (NAS) Devices
- CD/DVD Towers
- Printers and Fax servers
#4 Virus Management
One of the greatest threats to your network is the possibility of infection from viruses, spyware and spam. So having good, updated, anti-virus software installed on your systems is a necessity. In an office of 10 people or less, systems can be maintained individually. Anything more than that, though, can become a real burden. In those circumstances, an anti-virus package that combines workstation and server virus protection into a single solution makes more sense.
#5 Centralized Backup
All businesses should backup their data on a regular basis. By having all of your company and employee data stored in one location, backups can be performed reliably and quickly. So you'll never need to worry about what data is stored on what workstation as you do in a peer-to-peer network. Today, almost any media type can be used for backup purposes. In addition to the traditional tape drive, CDs, DVDs, removal storage and even Network Attached Storage (NAS) devices are acceptable. Your choice of media will depend on your specific backup requirements. Depending on your budget and your data retention needs, any of these would be an acceptable solution. Make sure you have at least a scheduled weekly backup, although a daily would be better.

Find the Right Server

A true server operating system makes all of this possible, and you're going to need to invest in a good one to get the most out of your new hardware. When it comes to choosing an operating system for your server, there really aren't a lot of options — Windows or Linux. A Linux-based OS does a fine job. It's reliable and has modest hardware requirements. No matter which you choose, you'll need a qualified technician to install and configure them properly.

Choosing the Right Server -- Servers are the unsung heroes of the corporate computing environment, working behind the scenes to help get the maximum benefit from the personal computers that people use every day. Before investing in server hardware, you need to consider applications, storage, processor, form factor, and more. Download this Internet.com eBook to help you choose wisely.

what exactly is a Server?

noreply@blogger.com (Mnaoj Joshi) — Sun, 15 May 2011 18:43:00 +0530

what exactly is a Server?
Many people are under the misconception that a server is no different from a typical desktop PC. This couldn't be further from the truth. While almost any PC that meets the minimum hardware requirements can run the server operating system, that doesn't make it a true server. A desktop system is optimized to run a user-friendly operating system, desktop applications, and facilitate other desktop oriented tasks. Even if the desktop had similar processor speeds, memory and storage capacity, it still isn't a replacement for a real server. The technologies behind them are engineered for different purposes
A server is engineered to manage, store, send and process data, 24 hours a day, 7 days a week, 356 days a year. For these reasons, servers need to be far more reliable than their desktop counterparts. In order to accomplish this, servers offer a variety of features not typically found in a desktop PC. Some servers will include:
- Duel processors; either equipped or capable
- Redundant hard drives or power supplies
- Hot swappable components
- Are scalable; to meet current, as well as future needs
- Can process data faster and more efficiently
So now that you know what makes up a server, what can a server do for you? Some of the more important ones are the following:
- File and Network security
- Increased reliability
- Centralized data storage and shared resources
- Virus Management
- Centralized Backup

What is Server?

noreply@blogger.com (Mnaoj Joshi) — Sun, 15 May 2011 18:35:00 +0530

A computer or device on a network that manages network resources. There are many different types of servers. For example:

File server: a computer and storage device dedicated to storing files. Any user on the network can store files on the server.
Print server: a computer that manages one or more printers, and a network server is a computer that manages network traffic.
Database server: a computer system that processes database queries.

Servers are often dedicated, meaning that they perform no other tasks besides their server tasks. On multiprocessing operating systems, however, a single computer can execute several programs at once. A server in this case could refer to the program that is managing resources rather than the entire computer.