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SERVLET

I am getting java.lang.nullpointer exception for this code plzz help me out all database linked programs are creating same error

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

public class retser extends HttpServlet {
    Connection c;
    Statement st;
    ResultSet rs;
    ServletConfig config;

    public void init() {
        config = getServletConfig();
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            c = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE", "system", "tiger");
            Statement st = c.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
            rs = st.executeQuery("select * from book");
        } catch (Exception e) {
        }
    }//end init

    public void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        PrintWriter pw = res.getWriter();
        try {
            int x = Integer.parseInt(req.getParameter("t1"));
            pw.println(x);
            rs.next();
            pw.println(rs.getInt(1));
//+"  "+rs.getString(2)+"  "+rs.getInt(3)		
        } catch (Exception e) {
            pw.println(e);
        }
    }
}
deepdon
Newbie Poster
1 post since Dec 2011
Reputation Points: 10
Solved Threads: 0
 

and what are you getting a nullpointer on? since we don't have your complete code, nor access to the resources you are using, you don't think we'll be able to reproduce your error, do you?

stultuske
Posting Sensei
3,137 posts since Jan 2007
Reputation Points: 1,114
Solved Threads: 433
 

This article has been dead for over three months

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