Code Samples from the Java Developers Almanac 2000

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Handling Key Presses

You can get the key that was pressed either as a key character (which is a Unicode character) or as a key code (a special value representing a particular key on the keyboard).

 component.addKeyListener(new MyKeyListener());
     
 public class MyKeyListener extends KeyAdapter {
   public void keyPressed(KeyEvent evt) {
     // Check for key characters.
     if (evt.getKeyChar() == 'a') {
       process(evt.getKeyChar());
     }
     
    // Check for key codes.
    if (evt.getKeyCode() == KeyEvent.VK_HOME) {
      process(evt.getKeyCode());
    }
   }
 }
 

Examplets provided by permission of the publisher, Addision-Wesley, and Author Patrick Chan.
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