Develop a Java application to demonstrate the use of adapter classes

/* Program : 22 
   Develop a Java application to demonstrate the use of adapter classes  
   Developed by : Malhar Vora
   Developed on : 11-11-2010
   Development Status : Completed and tested
   Email     : vbmade2000@gmail.com
   WebSite   : www.malhar2010.blogspot.com
*******************************************************************************************************************/
import javax.swing.*;
import java.awt.event.*;

public class P22 extends JFrame
{
 
 JLabel lblMsg=null;
 P22()
 {
  setSize(400,300);
  setTitle("Prorgam 22 - Developed by Malhar Vora");
  setDefaultCloseOperation(EXIT_ON_CLOSE);
  setVisible(true);
  setLayout(null);
  
  lblMsg = new JLabel("Message will be displayed here");
  
  lblMsg.setBounds(10,10,300,100);
  
  this.getContentPane().add(lblMsg); 
  
  MouseHandler mHandle = new MouseHandler();
  addMouseListener(mHandle);
  
 }
 
 class MouseHandler extends MouseAdapter
 {
  public void mousePressed(MouseEvent me)
  {
   lblMsg.setText("Mouse Pressed");
  }
  
  public void mouseReleased(MouseEvent me)
  {
   lblMsg.setText("Mouse Released");
  }
 }
 
 public static void main(String []str)
 {
  P23 p = new P23();
 }

}