Consuming events |
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This key listener discards non-alphabetic events:
public class Alpha implements KeyListener { public void keyPressed(KeyEvent e) { if (! Character.isLetter(e.getKeyChar())) { Toolkit.getDefaultToolkit().beep(); e.consume(); } } public void keyReleased(KeyEvent e) { // empty } public void keyTyped(KeyEvent e) { // empty } }
Slide 49 | ©Copyright 1997 | Jan Newmarch |