This is a simple animation example that shows exception handling and page redirection.

/**
 * Simple Animation Example
 * 
 * @author Jing Dong
 */

import java.awt.*;
import java.net.*;
import java.applet.*;


public class SimpleAnimation extends Applet {
 
 URL errorPage;      //error html page
 int currentImage;   //current image counter
 Image animation[];  //images
 
 MediaTracker tracker;
 
 public void init(){
  currentImage = 0;
  animation = new Image[8];
  tracker = new MediaTracker(this);
  
 
  //add images to MediaTracker
  for (int i = 0; i < 8; i++ ){
  animation[i] = getImage(getCodeBase(),
           "images/free" + (i + 1) + ".gif");
  
  tracker.addImage(animation[i], 0);
  }
  
  try {
   showStatus("Now Loading...");
   
   //wait for all images downloaded
   tracker.waitForAll(); 
   
  } catch(InterruptedException E) {
   
   try {
    errorPage = new URL(getCodeBase().toString()
      + "errorPage.html");
   } catch(MalformedURLException ME) {
   
    // page redirection
    getAppletContext().showDocument(errorPage);
   } 
  }
 }
 
 
 //override paint()
 public void paint(Graphics g) {
  
  //draw the current image
  g.drawImage(animation[currentImage], 10, 10, 250, 250, this);
  
  try {
   //program stops for 0.125 second
   Thread.sleep(125);
  } catch(InterruptedException E) {
   
   //create error html page
   try {
    errorPage = new URL(getCodeBase().toString()
      + "errorPage.html");
   }catch(MalformedURLException ME) {
    
    //page redirection to error page
    getAppletContext().showDocument(errorPage);
   }
  
  }
  
  
  if (currentImage == 7) 
   currentImage = 0;
  else
   currentImage = currentImage + 1;
  
  repaint();  //patint it again!
 }
}