Java Code

import java.awt.*;
import javax.swing.*;
public class SlidesApplet 
                             extends JApplet
{
   Slides  myslideshow;
   public void init( )
   {
      myslideshow = new Slides( );
      myslideshow.init( this );
      setLayout(new FlowLayout( ));
      add( myslideshow ) ;
   }
}


import java.awt.*;
import javax.swing.*;
public class Slides extends JPanel implements Runnable
{
   
   int SPEED = 1000;     // how fast to rotate through images
   Image[ ] photos;	     // array of all your images
   ImageIcon icon;	     // images need to be in an ImageIcon
   JLabel imgLabel;	     // and stored into a JLabel
   Thread runner; 
   int currentIndex = 0;   // current image index displayed

   public void init( JApplet app )
   {
   
       photos = new Image[4];       // load the images into memory
       photos[0] = app.getImage( app.getCodeBase( ), "Australia.jpg" );
       photos[1] = app.getImage( app.getCodeBase( ), "Budapest.jpg" );
       photos[2] = app.getImage( app.getCodeBase( ), "Galapagos.jpg" );
       photos[3] = app.getImage( app.getCodeBase( ), "Nepal.jpg" );
	icon = new ImageIcon( );
        imgLabel = new JLabel( );
        imgLabel.setHorizontalAlignment( JLabel.CENTER );
        setupIcon( 0 );         // initialize to display first image (index 0)

	add( imgLabel );        // add label to applet
	runner = new Thread(this);  // start a thread to time it
	runner.start( );
   }
   /** changes the image in the label    */
   public void setupIcon( int index )
   {
   
       currentIndex = index;
       icon.setImage( photos[index] );
       imgLabel.setIcon(icon );
       validate( );
   }
  public void run( )                           /** time the slideshow   */
  {
   
    try {
   
      while(true) {
   
          if( currentIndex == photos.length-1 )    // if  at  the last one,
              setupIcon( 0 );	         // start over with index 0
          else                            // otherwise just increment the index
              setupIcon( currentIndex+1 );	
          repaint( );                  // Show the change.
          Thread.sleep(SPEED);
      }
    } catch (InterruptedException ie) {
    }
  }
}