Click here to Skip to main content
15,301,414 members
Please Sign up or sign in to vote.
1.00/5 (1 vote)
See more:
Hi...

I am getting an exception named "java.lang.NullPointerException".
I have used an index.jsp and a Login.java(servlet) page in my project.....and my platform
is NetBeans 6.0.

So plz can anyont help me regarding this.


index.jsp:-

<pre lang="xml"><%--
    Document   : index
    Created on : Aug 28, 2010, 8:04:10 AM
    Author     : Prateek
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title> Login Form </title>
    </head>
    <form action="Login" method="post"/>
    <body>
        <br>
        <br>
   <center><h3> Please fill in the following information in order to continue with your registration</h3></center>
   <br>
   <br>
   <table border="2" bordercolor="black"  align="center"  cellpadding="5" cellspacing="2" width="450" height="300">
        <tr>
            <td ><center><font color="black"><b>First Name </b></font></center></td>
            <td><center><input type="text" name="fn"></center></td>
        </tr>

        <tr>
           <td><center><font color="black"><b>Last Name</b></font></center></td>
           <td><center><input type="text" name="ln"></center></td>
        </tr>

        <tr>
           <td><center><font color="black"><b>Address</b></font></center></td>
           <td><center><input type="text" name="address"></center></td>
        </tr>

        <tr>
           <td><center><font color="black"><b>Contact Number</b></font></center></td>
           <td><center><input type="text" name="cno"></center></td>
        </tr>

        <tr>
           <td><center><font color="black"><b>E-Mail ID</b></font></center></td>
           <td><center><input type="text" name="EMail"></center></td>
        </tr>

        <tr>
           <td><center><font color="black"><b>Registration Date</b></font></center></td>
           <td><center><input type="text" name="Rd"/></center></td>
        </tr>


    </table>
</body>
<br>
<br>
<center><input type="submit" value="     Save       ">&nbsp;&nbsp;&nbsp;<input type="reset" value="     Reset        " onclick="location.reload()"></center>
</html>


Login.java (SERVLET):-

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.*;
public class Login extends HttpServlet {


protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();

String fn =request.getParameter("First Name");
String ln =request.getParameter("Last Name");
String address=request.getParameter("Address");
String cno=request.getParameter("cno");
String EMail=request.getParameter("E-Maild ID");
String Rd=request.getParameter("Registration Date");

try
{
if(fn.length()==0 && ln.length()==0 && address.length()==0 && cno.length()==0 && EMail.length()==0 && Rd.length()==0)
{
response.sendRedirect("error.html");
}
else
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection c = DriverManager.getConnection("jdbc:odbc:Family","","");
PreparedStatement ps = c.prepareStatement("insert into Friends values (FirstName,LastName,Address,ContactNo,EMailID,RegistrationDate) values(?,?,?,?,?,?)");
ps.setString(1, fn);
ps.setString(2, ln);
ps.setString(3, address);
ps.setString(4, cno);
ps.setString(5, EMail);
ps.setString(6, Rd);

ps.executeUpdate();
response.sendRedirect("success.html");
}
}

catch(Exception ec)
{
out.print(ec);
}

finally {
out.close();
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}


Posted
Comments
zommarin 11-Nov-10 2:16am
   
Do you have a stack trace that you can attach?

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)



CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900