TechJug » java

Eclipse and MyEclipse Proxy Settings

ali — Tue, 29 Dec 2009 13:04:00 +0000

If you want to update your Eclipse platform and your machine is behind a proxy, then you need to set your network proxy in order for you Eclipse to download the updates.

You can set the proxy as follows

1- Go to window > preferences

2- Select General > Network Connections. Provide HTTP proxy and port and press OK. Your proxy is set and you can update your Eclipse platform now

Tutorial: Creating Java Web Application

ali — Mon, 21 Dec 2009 18:41:36 +0000

In this tutorial you will learn how to create a simple Hello World Java web application. The application will not use any IDE and will solely depend on what JDK provides.

So, let start with our first java hello world web application.

Pre-Requisites

1- Download JDK from here. Latest JDK version at the time of writing this tutorial is 6.

2- Download and install/unzip Apache Tomcat web server (zip or tar for Linux or installer) from here

Set up Java environment on your machine

Please refer to Install And Configure JDK On Windows

Set up Apache Tomcat environment on your machine

Please refer to Set Up Apache Tomcat On Windows

Now your JDK and Tomcat is setup. We will start developing our web application. This will be a very simple web application in which only one JSP will be created and it will print some text in browser.

Lets get started.

1- Create a folder Helloworld anywhere on your machine

2- Create a JSP file helloworld.jsp under this folder.

3- Put the following code in helloworld.jsp

 
 

  
    </span></a></span>Hello world<span style="color: #009900;"><span style="color: #000000; font-weight: bold;">
  
 
  
Hello World!!!

4- Create folder Helloworld/WEB-INF

5- Create a file web.xml in WEB-INF and put the following code in this file

 
 
 version="2.5" xsi:schemaLocation="
http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 
>
>helloworld.jsp>
>
>

6- That’s it. We are done with the coding part. Now copy the entire Helloworld folder and put it in /webapps

7- Start tomcat server, /bin/startup.bat

8- Open your browser, and access the following URL http://localhost:8080/Helloworld

Enjoy!

Install And Configure JDK On Windows

ali — Sun, 20 Dec 2009 19:48:10 +0000

First download JDK from here. I am using JDK 6 for this tutorial

1- Run the JDK setup and install Java on your machine

2- On windows right click My Computer and click Properties

3- Choose Advance tab and click on Environment Variables button

4- Under System variable press New button

5- Provide JAVA_HOME variable in Variable name field and your JDK Home path in Variable value

6- Find Path variable under System variables and press Edit button. Append path up to JDK bin directory and press OK.

To check whether you JDK is setup properly open command prompt and write following command on console

> java –version

You will get output similar to the following image.