edit and submit in servlets

Hi
I am working on creating a samll forum, which include some servlets. Once user posts data, he can hit 'sumbit' button ('in which case store()' is executed) or 'preview' button ('in which case showPreview()' is executed) in the following servlet.
As you can see in showPreview() besides showing preview it also outputs 'sumbit' button and 'edit' button. While in preview scrren if user clicks on edit button it should go to 'http://localhost:8080/test/index.html'. I couldn't figure out how to do this. If he clicks 'submit' button it should call store method.
If someone can help me with this i will appreciate it very much.

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

public class RequestPos1 extends HttpServlet
{
private Connection conn;
public void init(ServletConfig conf) throws ServletException
{
super.init(conf);
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
conn =DriverManager.getConnection("jdbc      :-o	      dbc:request", "srini", "srini");
}catch (Exception e) {
System.err.println(e);
}

}
public void doGet(HttpServletRequest req, HttpServletResponse res) 
             throws javax.servlet.ServletException, java.io.IOException
{
String title = (String) req.getParameter("Title");
res.setContentType("text/html");
PrintWriter out = res.getWriter();
  String docType =
      "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
      "Transitional//EN\">\n";
    out.println(docType +
                "<HTML>\n" +
                "<HEAD><TITLE>RequestPosted</TITLE></HEAD>\n" +
                "<BODY>\n" + title +"<h1> Your Request is posted</h1>\n"
               +"<a href=\"http://localhost:8080/test/index.html\">\n" + 
               "<code>Please Click here to More Requests or Check all posted Requests</code></a>\n" +
"</BODY></html>");
}
public void doPost(HttpServletRequest req, HttpServletResponse res) 
                    throws javax.servlet.ServletException, java.io.IOException
{
  String title = (String) req.getParameter("Title");
String system = (String) req.getParameter("System");
//String date = (String) req.getAttribute("Date");
String desc = (String) req.getParameter("Description");
String comm = (String) req.getParameter("Comments");
PrintWriter out = res.getWriter();
if (req.getParameter("previewButton") != null) {
      showPreview(req, out);
   }else {
      store(res, title, system, desc, comm);
}

}
private void showPreview(HttpServletRequest req,
                          PrintWriter out) {
    String title =(String) req.getParameter("Title");
    String system =(String) req.getParameter("System");
    String desc = (String) req.getParameter("Description");
    String comm = (String) req.getParameter("Comments");
    out.println
      ("<HTML>\n" +
       "<HEAD><TITLE> PREVIEW </TITLE></HEAD>\n" +
        "<BODY>\n" +
        "<CENTER>\n"+
        "<H5>\n"+title+"</H5>\n" +"<H5>\n"+system+"</H5>\n" +"<p>" +
        "<H5>\n"+desc+"</H5>\n" + "<p>" + "<H5>\n"+comm+"</H5>\n" +
        "<INPUT TYPE=\"SUBMIT\" NAME=\"submiButton\" Value=\"Submit\">\n"+
        "<INPUT TYPE=\"SUBMIT\" NAME=\"editButton\" Value=\"Edit\">\n"+
        "</BODY></HTML>");
}
private void store(HttpServletResponse re,String ti, String sy, String de, String co) {

String ti1=ti;
String sy1=sy;
String de1=de;
String co1=co;
HttpServletResponse re1=re;
try{

Statement stmt = conn.createStatement();
String req_insert = "INSERT into request "
                             + "VALUES ('" + ti1 +"', '" + sy1 + "', '" + de1  +"', '" +
co1 + "')";
stmt.executeUpdate(req_insert);

stmt.close();
PrintWriter out = re1.getWriter();
 out.println
      ("<HTML>\n" +
       "<HEAD><TITLE> PREVIEW </TITLE></HEAD>\n" +
        "<BODY>\n" +
        "<CENTER>\n"+
        "<H3>Your Request is Submitted</H3>\n" +
        "</BODY></HTML>");
}
catch(SQLException es) {
es.printStackTrace();;
}
catch(Exception e) {
e.printStackTrace();
}

}
}

[ July 14, 2003: Message edited by: Cindy Glass ]