مشكلة مع ال keyListener

عذراً المشكلة كانت فى السطر ده :

        label.addKeyListener(myKeyListener);

و ده غلط المفروض يكون كده :

        this.addKeyListener(myKeyListener);

و ده معناه إننا هنشغل ال KeyListener على هذا ال class .

الكود :

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import java.awt.Dimension;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class TestKeyBoard extends JFrame {

    private MyKeyListener myKeyListener;
    private JPanel panel = new JPanel();
    private JLabel label = new JLabel("Key Listener");

    public TestKeyBoard() {
        myKeyListener = new MyKeyListener();
        System.out.println("Test KeyBoard");
        this.addKeyListener(myKeyListener);
        panel.add(label);
        getContentPane().add(panel);

    }

    public static void main(String[] args) {
        TestKeyBoard testKeyBoard = new TestKeyBoard();
        testKeyBoard.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        testKeyBoard.setSize(new Dimension(400, 200));
        testKeyBoard.setLocationRelativeTo(null);
        testKeyBoard.setVisible(true);
    }

    private class MyKeyListener extends KeyAdapter {

        @Override
        public void keyPressed(KeyEvent e) {
            super.keyPressed(e);
            int keyCode = e.getKeyCode();
            if (keyCode == KeyEvent.VK_UP) {
                System.out.println("keyCode" + " " + keyCode);
            } else if (keyCode == KeyEvent.VK_DOWN) {
                System.out.println("keyCode" + " " + keyCode);
            } else if (keyCode == KeyEvent.VK_LEFT) {
                System.out.println("keyCode" + " " + keyCode);
            } else if (keyCode == KeyEvent.VK_RIGHT) {
                System.out.println("keyCode" + " " + keyCode);
            }
        }
    }
}

شكراً