Input streams kill my applet

Question

This is probably a little thing that I have forgotten but I can't for the life of me get. Ok I should probably say I am running XP, with Java 1.5 and Firefox
I have an applet that works fine on Eclipse but when I try to run it by it self it seems to die at the point where I have my input streams.
Basicly I have included the test code that removes all the input processing and tree building. This test script below just opens a input stream, creates a tree with two nodes and displays the tree. If you remove any the 3 TRYS it will not work.
I have tried various methods to read in the URL I have but it seems to die every time. I have included the code below. If anyone has any suggestions I would greatly appreciate it.
Thanks
Luis
import java.applet.AppletContext;
import java.awt.Color;
import java.awt.Font;
import java.io.DataInputStream;
import java.io.InputStream;
import java.net.*;
import java.io.*;
import javax.swing.JApplet;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreePath;
import java.net.URLConnection;
public class TestApplet extends JApplet{
     // Variables used by the applet
     protected JTree jt;
     protected URL url;
     public void init() {
          setBackground(Color.lightGray);
          setFont(new Font("Verdana", Font.BOLD, 12));
          try{
          url = new URL("http://www.yahoo.com");
          //IF I REMOVE ANY OF THE FOLLOWING COMMENTS IT DOES NOT WORK
          //TRY 1.  IF REMOVED IT WILL NOT WORK
          /*     URL yahoo = new URL("http://www.yahoo.com/");
               BufferedReader in = new BufferedReader(yahoo.openStream());
               String inputLine;
               while ((inputLine = in.readLine()) != null)
                   System.out.println(inputLine);
               in.close();
          //TRY 2.  IF REMOVED IT WILL NOT WORK
          /*     URLConnection connection = url.openConnection();
            InputStream in = connection.getInputStream();
               DataInputStream stream = new DataInputStream(in);
          //TRY 3.  IF REMOVED IT WILL NOT WORK
          //BufferedReader stream = new BufferedReader(new InputStreamReader(url.openStream()));
          DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode(url);
         rootNode.add(new DefaultMutableTreeNode("Child 1"));
          JTree jt = new JTree(rootNode);
          // Tree Setup
          jt.setExpandsSelectedPaths(true);
          jt.setVisible(true);
          jt.putClientProperty("JTree.lineStyle", "Angled");
          getContentPane().removeAll();
          getContentPane().add(jt);
          //stream.close();
          //iStream.close();
          } catch (Exception e) {
               e.printStackTrace();
     public void start() {
}// end TreeApplet Class

Answer 1

You are right on the money about the applet viewer working and the security errors I am getting. Look below this is from the console.
java.security.AccessControlException: access denied (java.net.SocketPermission www.reservhotel.com:80 connect,resolve)
     at java.security.AccessControlContext.checkPermission(Unknown Source)
     at java.security.AccessController.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkConnect(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.<init>(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
     at RHMenu.start(RHMenu.java:80)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
I understand that the applet cannot connect to a server other than the one it is connected to but shouldn't I be able to connect to "www.yahoo.com"? I tried putting the URL and open stream in the start thread but it does not seem to work. When I run it in a web browser, the Java Sun comes up and it says it is inited and started but nothing comes up. Any ideas?
Thanks,
Luis