problem with inserting data using Jsp and Servlet

DataBase:PostgreSQL8.3
Table:

Jdk1.6

//ServletUser.java

package data;

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

public class ServletUser extends HttpServlet{
	
  public void init(ServletConfig config) throws ServletException{
    super.init(config);
  }
public void doGet(HttpServletRequest req, HttpServletResponse res) 
  throws ServletException, IOException{
	 
    String connectionURL = "jdbc:postgresql://localhost:5432/postgres";
    Connection connection = null;
    ResultSet rs;
    res.setContentType("text/html");
    PrintWriter out = res.getWriter();
String username = req.getParameter("empid");
    String pass = req.getParameter("ename");
     
    try {
      // Load the database driver
      Class.forName("org.postgresql.Driver");
      // Get a Connection to the database
      connection = DriverManager.getConnection(connectionURL, "postgres", "admin"); 
      //Add the data into the database
PreparedStatement pst = connection.prepareStatement("INSERT into sample VALUES(?,?)");
 
      pst.setString(1,username);
      pst.setString(2,pass);
            
      int numRowsChanged = pst.executeUpdate();
       if(numRowsChanged!=0){  
    	         out.println("<br>Record has been inserted");  
    	       }  
    	       else{  
    	         out.println("failed to insert the data");  
    	        }  
      pst.close();
    }
    catch(ClassNotFoundException e){
      out.println("Couldn't load database driver: " + e.getMessage());
    }
    catch(SQLException e){
      out.println("SQLException caught: " + e.getMessage());
    }
    catch (Exception e){
      out.println(e);
    }
    finally {
      // Always close the database connection.
      try {
        if (connection != null) connection.close();
      }
      catch (SQLException ignored){
        out.println(ignored);
      }
    }
    
  	}
   }

//AddForm.jsp

i am using Eclipse

Steps:http://localhost:8081/AddDataBase/

i got output ----->Record has been inserted
but no data in sample table.

i want know how to show jsp page first after i insert different data to sample table

please help me

Athi,
In my opinion, based on the information you provided, this is not a JDBC question.
In your file AddForm.jsp:

<form name="TestForm" method="post" action="/ServletUser">

This means the doPost method in servlet ServletUser will be invoked.
However I could not find the code for method doPost in the servlet code you posted, only the doGet method.
Nonetheless you claim that the servlet code is being executed.
This means you have either supplied incomplete or erroneous information which makes it difficult for others to help you.
You ask:

i want know how to show jsp page first after i insert different data to sample table

Which JSP page are you referring to? AddForm.jsp ?
How is this related to your claim that after the servlet method executes, you are seeing no data in the database?

Good Luck,
Avi.