import  java.awt.*;
 import  java.awt.event.*;
 import  javax.swing.*;

 class  MyComponent  extends  JComponent{
	
	String msg = "";  //
	MyComponent(){
	
		setSize( 100 ,  100 );
		addMouseListener( new  MouseAdapter(){
			 public   void  mousePressed(MouseEvent me){
				msg = "Mouse pressed on MyComponent";
				repaint();
			}
		});
		setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
		setVisible(true);
	}
	
	 public   void  paintComponent(Graphics g) {
		 super .paintComponent(g);
		g.fillRect( 0 ,  0 ,  100 ,  100 );
		g.drawString(msg,  500 ,  500 );
	}
}

 class  MyFrame  extends  JFrame{
	
	MyFrame(){
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		getContentPane().add( new  MyComponent());
		setSize( 800 ,  600 );
		setVisible(true);
	}
	
	 public   static   void  main(String[] args) {
                          new  MyFrame();
	}	
}