### Source Code for Request Parameter Example

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

    public class RequestParamExample extends HttpServlet {

        public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws IOException, ServletException
        {
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            out.println("GET Request. No Form Data Posted");
        }

        public void doPost(HttpServletRequest request, HttpServletResponse res)
        throws IOException, ServletException
        {
            Enumeration e = request.getParameterNames();
    	PrintWriter out = res.getWriter ();
            while (e.hasMoreElements()) {
                String name = (String)e.nextElement();
                String value = request.getParameter(name);
                out.println(name + " = " + value);
            }
        }
    }