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Java » Swing JFC » AppletScreenshots 
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/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 
 * Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */

//applet.html

/*
<html>
<head>
   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
   <title>We've moved!</title>
</head>
<body bgcolor="White">
<h1>We've moved!</h1>
<p>Please update your bookmarks. Our new address is:</P>
<applet code=Redir.class width=300 heighT=100 alt="http://www.java2s.com">
  <param name="URL" value="http://www.java2s.com">
  <b>http://www.java2s.com</b>
</applet>
<hr/>
<p>If you have a Java-enabled browser,
we'll try to take you there in a few seconds.</p>
</body>
</html>


*/

import java.applet.Applet;
import java.awt.Graphics;
import java.net.URL;

/**
 * A simple redirection applet.
 
 @author Ian Darwin
 */
public class Redir extends Applet implements Runnable {
  protected String urlString;

  protected URL theNewURL;

  protected final static int NSECONDS = 5;

  protected Thread t;

  public void init() {
    try {
      // Get the address from a PARAM...
      urlString = getParameter("URL");
      if (urlString == null) {
        urlString = "MISSING URL";
        throw new IllegalArgumentException(
            "Redir requires a URL parameter in the HTML");
      }

      // Make up the URL object
      theNewURL = new URL(urlString);

      // debug...
      // showStatus("URL = " + theNewURL);

    catch (Exception err) {
      System.err.println("Error!\n" + err);
      showStatus("Error, look in Java Console for details!");
    }
  }

  public void start() {
    if (theNewURL == null)
      return;

    t = new Thread(this);
    t.start();
  }

  /** Print a little message to the user. */
  public void paint(Graphics g) {
    if (urlString != null)
      g.drawString(urlString, 2050);
    else
      g.drawString("Initializing..."2050);
  }

  /**
   * If users moves off the page, set Thread t to null so we don't
   * showDocument from within the middle of the new page!
   */
  public void stop() {
    t = null;
  }

  /**
   * run, called by the Thread, does the work of sleeping for a fixed number
   * of seconds then, if the user hasn't moved off the page, actually passing
   * control to the new page.
   */
  public void run() {
    for (int i = NSECONDS; i >= 0; i--) {
      try {
        Thread.sleep(1000);
        if (t == null)
          return;
      catch (InterruptedException e) {
        // so what?
      }
      if (t == null)
        return;
      showStatus(Integer.toString(i));

      if (t == null)
        return;

      showStatus("Ignition!");
      // "And then a miracle occurs..."
      getAppletContext().showDocument(theNewURL);
    }
  }
}



           
         
    
    
  
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