How to manipulate URLS?

I am trying to run two files so that I can invoke the webpage from an applet.
Here is my code:
1. SiteSelector.html
<HTML>
<HEAD><TITLE> New Document </TITLE></HEAD>
<BODY>
<APPLET CODE="SiteSelector.class" WIDTH=300 HEIGHT=200>
<PARAM NAME ="title0" VALUE="Java Home Page">
<PARAM NAME="location0" VALUE="http://java.sun.com/">
<PARAM NAME="title1" VALUE="Dietel">
<PARAM NAME="location1" VALUE="http://www.deitel.com/">
<PARAM NAME="title2" VALUE="JavaWorld">
<PARAM NAME="location2" VALUE="http://www.javaworld.com/">
<PARAM NAME="title3" VALUE="Gamelan">
<PARAM NAME="location3" VALUE="http://www.gamelan.com/">
</APPLET>
</BODY>
</HTML>
2. SiteSelector.java
import java.net.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.applet.AppletContext;
public class SiteSelector extends JApplet {
private Hashtable sites;
private Vector siteNames;
public void init()
sites= new Hashtable(); //sites have two parameters: title, url
siteNames = new Vector();
getSitesFromHTMLParameters();
Container c = getContentPane();
c.add(new JLabel("Choose a site to browse"),BorderLayout.NORTH);
final JList siteChooser = new JList(siteNames);
siteChooser.addListSelectionListener(
new ListSelectionListener(){
public void valueChanged(ListSelectionEvent e)
Object d = siteChooser.getSelectedValue();
URL newDocument = (URL)sites.get(d);
AppletContext browser = getAppletContext();
browser.showDocument(newDocument);
c.add(new JScrollPane(siteChooser), BorderLayout.CENTER);
private void getSitesFromHTMLParameters()
String title, location;
URL url;
int counter=0;
while(true){
title = getParameter("title"+counter);
if(title != null){
location = getParameter("location"+counter);
try{
url = new URL(location);
sites.put(title, url);
siteNames.addElement(title);
}catch(MalformedURLException e1){
e1.printStackTrace();
else
break;
++counter;
I use JDK1.3, and tried the following two ways to run
this, compiling is fine, but none works.
1. I use appletviewer.
2. I type C:\SiteSelector.html in InternetExplorer5
browser.
Do I still need to install Java plug-in to make it
works?
Thanks,

Nope, it's not the sandbox. Viewing web pages is not a (major)security issue. Since it's not giving any compiling error the code is right at least. What error message is it giving in browser or appletviewer. If none, you're on your own.

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