Servlet Query

hi
I am new to servlets . My first program executed..
but the second one is having problem as all is going right but when the i submit the uid and pwd through the html i get a blank page.it shows nothing

Servlet Code:
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;

public class login extends HttpServlet
{
public void doGet(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException
{
String uid=req.getParameter("t1");
String pwd=req.getParameter("t2");

PrintWriter out=res.getWriter();

res.setContentType("text/html");

try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc

dbc:ms","scott","tiger");

PreparedStatement psm=con.prepareStatement("select * from reg where uid1=? and pwd=?");
psm.setString(1,uid);
psm.setString(1,pwd);
ResultSet rs=psm.executeQuery();
if(rs.next())
{
out.println("<html><head><title>WELCOME</title></head>");
out.println("<body><b><i>Hello user "+uid+"</b></i>");
out.println("</body></html>");
}
else res.sendRedirect("http://localhost:8080/login.html");
}
catch(Exception e)
{
e.printStackTrace();}
}
}

plz help me out ...
thanks .

I would first verify that the parameters are populated before using them in a query.

String uid=req.getParameter("t1");
String pwd=req.getParameter("t2");

if(your uid and pw fields != null && their length is > 0)
do what ever

Also, thee is a chance that no rows were returned. You need to display something if no rows were found.

You should also take the precaution of closing the output stream to force flushing of the contents. A simple out.close() will do the trick.
Bill

Any stack trace output in the console?