[Marcus]

There are several ways to approach this.

Implement KeyListener:

Code:

 import java.applet.Applet;
 
 import java.awt.event.KeyListener;
 import java.awt.event.KeyEvent;
 
 public class KeyListenerExample extends Applet implements KeyListener {
     public void init() {
         addKeyListener(this);
     }
     
     public void keyPressed(KeyEvent e) {
         System.out.println("keyPressed: " + e.getKeyChar());
     }
     
     public void keyTyped(KeyEvent e) {
         System.out.println("keyTyped: " + e.getKeyChar());
     }
     
     public void keyReleased(KeyEvent e) {
         System.out.println("keyReleased: " + e.getKeyChar());
     }
 }

Create an inner private class that extends a class that implements KeyListener, or that implements KeyListener itself:

Code:

import java.applet.Applet;
 
 import java.awt.event.KeyAdapter;
 import java.awt.event.KeyEvent;
 
 public class KeyListenerExample extends Applet {
     public void init() {
         addKeyListener(new MyKeyListener());
     }
     
     private class MyKeyListener extends KeyAdapter {
         public void keyPressed(KeyEvent e) {
             System.out.println("keyPressed: " + e.getKeyChar());
         }
     
         public void keyTyped(KeyEvent e) {
             System.out.println("keyTyped: " + e.getKeyChar());
         }
     
         public void keyReleased(KeyEvent e) {
             System.out.println("keyReleased: " + e.getKeyChar());
         }
     }
 }

Create an anonymous inner class:

Code:

import java.applet.Applet;
 
 import java.awt.event.KeyListener;
 import java.awt.event.KeyEvent;
 
 public class KeyListenerExample extends Applet {
     public void init() {
         addKeyListener(new KeyListener() {
             public void keyPressed(KeyEvent e) {
                 System.out.println("keyPressed: " + e.getKeyChar());
             }
             
             public void keyTyped(KeyEvent e) {
                 System.out.println("keyTyped: " + e.getKeyChar());
             }
             
             public void keyReleased(KeyEvent e) {
                 System.out.println("keyReleased: " + e.getKeyChar());
             }
         });
     }
 }

Greetings.

Marcus