ClassCastException Error in a Java Servlet

This message is in MIME format. Since your mail reader does not understand
this format, some or all of this message may not be legible.
--
[ Picked text/plain from multipart/alternative ]
Thanks for the quick response.

I believe I did include the servlet as a subclass of HttpSerlet.  I included
the following code:

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

public class Hello extends HttpServlet
{

Thanks,

Eric