import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;

public class Lamp2 extends Applet implements MouseListener{
		int varv=0;
  public Lamp2(){
   addMouseListener(this);
  }
  public void paint(Graphics g){
    g.setColor(Color.black);
    g.fillRect(90, 70, 30, 70);
    g.setColor(Color.yellow);
    g.fillOval(80, 10, 50, 70);
  }
  public void mousePressed(MouseEvent e){}
  public void mouseReleased(MouseEvent e){}
  public void mouseClicked(MouseEvent e){
         	Graphics g=getGraphics();
	         Graphics g1=getGraphics();
	          try{
		           if(varv==0){
     			g.setColor(Color.yellow);
     			g.fillOval(80, 10, 50, 70); 
			   varv=1;
			   
			 }
			 else 
			 	if(varv==1){
     		  	g1.setColor(Color.white);
     			g1.fillOval(80, 10, 50, 70);
			   varv=0;
			   
			 }     	
			 }catch(Exception viga){}	
  }
  public void mouseEntered(MouseEvent e){}
  public void mouseExited(MouseEvent e){}
  public static void main(String argumendid[]){
    Frame f=new Frame();
    f.add(new Lamp2());
    f.setSize(300, 300);
    f.setVisible(true);
    f.setBackground(Color.blue); 
  }
}