KeyListener - how to handle series of key pressed

Question

Hi,
Is there a way to handle a series of key pressed in the keyPressed(KeyEvent e) method. for instance, I want to popup a dialogbox when the user pressed: F9, 31, F9 ?
thanks,
chau

Answer 1

Is there a way to handle a series of key pressed in
the keyPressed(KeyEvent e) method. for instance, I
want to popup a dialogbox when the user pressed: F9,
31, F9 ?Look at the following.
import java.awt.event.*;
import javax.swing.*;
/* http://forum.java.sun.com/thread.jspa?messageID=2900727 */
/* http://forums.devshed.com/t218618/s.html */
class KeyListenerDemo {
    public static void main(String[] args) {
        new KeyListenerDemo().go();
    void go() {
        JTextField field = new JTextField("Press a key, and watch the console.");
        field.setEditable(false);
        field.addKeyListener(new MyKeyListener());
        JFrame frame = new JFrame("KeyListener Demo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(field);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
class MyKeyListener extends KeyAdapter {
    public void keyTyped(KeyEvent e) {
        if (e.getKeyChar() == KeyEvent.VK_ESCAPE) System.exit(0);
        System.out.println("Typed: " + e.getKeyChar());
}It shouldn't take too much imagination to figure out how to make the listener listen for that combination....