public   static   void  main(String[] args)
    {
        JFrame frm =  new  JFrame();
        frm.setSize( 100 ,  100 );
        JTextField tf =  new  JTextField();
        tf.setSize( 80 ,  25 );
        tf.setLocation( 10 ,  10 );
        tf.addKeyListener( new  KeyListener()
            {
             public   void  keyPressed(KeyEvent e)
            {
                System.out.println("keyPressed");
                System.out.println(e.getKeyCode());
            }

             public   void  keyReleased(KeyEvent e)
            {
                System.out.println("keyReleased");
                System.out.println(e.getKeyCode());
            }

             public   void  keyTyped(KeyEvent e)
            {
                System.out.println("keyTyped");
                System.out.println(e.getKeyChar());
            }
        });
        
        frm.getContentPane().setLayout( null );
        frm.getContentPane().add(tf);
        frm.setVisible(true);
        frm.setDefaultCloseOperation(frm.EXIT_ON_CLOSE);
    }