Redirect won't work, or is it something else wrong?

Java: html and servlet; not going to specified pages, don't know what's wrong
using websphere ide, when i "run on server" it displays the html, but when I click
on the submit button, "page cannot be displayed"
I don't think my syntax is wrong.
html code follows:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<meta name="GENERATOR" content="IBM WebSphere Studio" />
<title>OIISWelcomePage.html</title>
</head>
<body>
<form method="post" action="/MyWebApp/OIISWelcomeServlet">
<h2 style="text-align: center">Manufacturing Company<br/>
Inventory Query System</h2><hr />
<h3>
This application is used to query the inventory system. <br/>
Please make your selection to update the manufacturing database.
<br/><br/>
<input type="radio" name="order" value="Query" checked="checked" /> Query<br/>
<input type="radio" name="order" value="Add" /> Add<br/>
<input type="radio" name="order" value="Change" /> Change<br/>
<input type="radio" name="order" value="Delete" /> Delete<br/>
<br/>
<input type="submit" name="submit" value="Submit" /><br/>
<br/>
<input type="hidden" name="sw" value="" />
</h3>
</form></body></html>java servlet follows:
package myservlets;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class OIISWelcomeServlet extends HttpServlet
     public void doGet(HttpServletRequest req, HttpServletResponse resp)
          throws ServletException, IOException
          if(req.getParameter("sw")==null)
               resp.sendRedirect("http://localhost:9080/MyWebApp/OIISWelcomePage.html");
     public void doPost(HttpServletRequest req, HttpServletResponse resp)
          throws ServletException, IOException
          if(req.getParameter("order").equals("Query"))
                              resp.sendRedirect("http://localhost:9080/MyWebApp/OIISQueryPage");
          else if(req.getParameter("order").equals("Add"))
                    resp.sendRedirect("http://localhost:9080/MyWebApp/OIISAddPage");
          else if(req.getParameter("order").equals("Change"))
                    resp.sendRedirect("http://localhost:9080/MyWebApp/OIISChangePage");
          else if(req.getParameter("order").equals("Delete"))
                    resp.sendRedirect("http://localhost:9080/MyWebApp/OIISDeletePage");
     public void init() throws ServletException
          super.init();
}

one time i made a redirect servlet, and blogged about it here:
[http://forum.java.sun.com/thread.jspa?threadID=5286820&tstart=0|http://forum.java.sun.com/thread.jspa?threadID=5286820&tstart=0]
i suggest you start with my servlet, and add shit to it until you get what you need.

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Redirect won't work, or is it something else wrong?

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