<applet code="a_duke_0.class" width="360" height="240">...</applet>

<applet code="a_duke_0.class" width="480" height="360">...</applet>

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

public class a_duke_0 extends Applet
{
   private Image immagine;

   public void init()
   { 
      immagine=getImage(getCodeBase(), "duke.jpg");
   }

   public void paint(Graphics g)
   {
      // centro dell'applet...
      int x=getSize().width/2;
      int y=getSize().height/2;
      g.drawImage(immagine, x, y, this);
   }
}