Eclipse on Ubuntu for J2EE

“Install or update Eclipse to have Eclipse Web Tools Platform (WTP).”

Eclipse can be configured on Ubuntu (8.4) as follows:

1. Stop all apache and tomcat servers or any other if running on your host:

/etc/init.d/apache2 stop
/etc/init.d/tomcatX.X stop

P.S: You need to be root or use sudo.

2. Create a new dynamic web project:

• Click on New > Projects > Dynamic web project
• Enter the name, click finish

3. Add a new server on your localhost:

• Click on the server tab
• Right click and select New Server
• Select Basic >> J2EE Preview at localhost (or any other appropriate for your need)

4. Test your server by starting it:

• Right click, start
• If any conflicts in the port, change the port of your local server

5. Create a Servlet in your project directory:

Try this ever famous “Hello World!!” (Add HTML Tags if required):

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class HelloWorld extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws IOException, ServletException
    {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
       
        out.println("Hello World!");
    
    }
}

6. Right click on your server and select add or remove projects and add your current project

7. Run as >> Run on Server

P.S: If you find any errors as cannot import javax.servlet.*; go to project properties >> Java build >> Add external jar and add Servlet.jar. I downloaded it from here.

8. Learn, Run and be Happy :)