Re: addKeyListener is NOT working

From:

"chandu" <gorantala@lucent.com>

Newsgroups:

comp.lang.java.help

Date:

25 May 2006 14:48:48 -0700

Message-ID:

<1148593728.562955.93840@j55g2000cwa.googlegroups.com>

It works fine. Whenever you do actions with keyboard keys, it generates
key event and executes either keyPressed or keyReleased or keyTyped.
Even i also tried it. It is working fine. For your reference
.....................

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JFrame;

public class xxx extends JFrame implements ActionListener, KeyListener
{
      boolean inAnApplet = true;

      JButton mybutton;

      public xxx() {

         mybutton = new JButton("HAI");
         mybutton.addActionListener(this);
         addKeyListener(this);
         addWindowListener(new WindowAdapter() {
               public void windowClosing(WindowEvent e) {
                   if (inAnApplet) {
                       dispose();
                   } else {
                       System.exit(0);
                   }
               }
           });
          }

      public void keyPressed(KeyEvent e) {
           System.out.println("In KeyPressed"); // never reached !!
       }

      public void keyTyped(KeyEvent e) {
          System.out.println("In KeyTyped"); // never reached !!
      }

      public void keyReleased(KeyEvent e) {
          System.out.println("In KeyReleased"); // never reached !!
      }

         public void actionPerformed(ActionEvent e){
         System.out.println("In ActPerf"); //reached !!
          }

   public static void main(String args[]) {
      xxx window = new xxx();
      window.setSize(100,100);
      window.setVisible(true);
      }

   }

output:

In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyReleased
In KeyPressed
In KeyTyped
In KeyReleased