Java snippet to get help with KeyListener

KeyLis.java

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import java.awt.*;
import java.awt.event.*;

public class KeyLis{
	public static void main(String[] args){
		JFrame frame=new JFrame("Test Frame");
	    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	    frame.getContentPane().add(new KeyTestPanel());

	    frame.pack();
	    frame.setVisible(true);
    	    

    }

}

class KeyTestPanel extends JPanel{
	JLabel testLabel;
	private final int WIDTH=300, HEIGHT=300;
	private int x=0;

	public KeyTestPanel(){
		
		MyKeyListener listener = new MyKeyListener();
		addKeyListener(listener);
		setPreferredSize(new Dimension(WIDTH, HEIGHT));

		testLabel = new JLabel("No Key pressed yet");
		add(testLabel);
	}

	private void TestUpdate(){
		testLabel.setText("Updated " + Integer.toString(x));
		x+=1;
	}

		private class MyKeyListener implements KeyListener{
		public void keyPressed(KeyEvent e){
			TestUpdate();
		}
		public void keyReleased(KeyEvent e){
			/*flap();*/
		}
		public void keyTyped(KeyEvent e){
			/*flap();*/
		}
	}

}