import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
public class kukkuvring extends Applet implements MouseListener{
  int x=100;
  int y=100;
  public kukkuvring(){
    addMouseListener(this);
  }
  public void paint(Graphics g){
      g.drawOval(x, y, 20, 20);
  }
  
  public void mousePressed(MouseEvent e){
    x=e.getX();
    y=e.getY();
	Graphics g=getGraphics();
	for(;  y<240; y=y+2){
      g.setColor(Color.red);       //joonistatakse must ring
      g.fillOval(x, y, 20, 20);
      g.drawOval(x, y, 20, 20);
      try{Thread.sleep(50);}catch(Exception ex){} //oodatakse veidi
      g.setColor(Color.white);       //ning kustutatakse see
      g.fillOval(x, y, 20, 20);
      g.drawOval(x, y, 20, 20);     //valgega üle joonistades
    }
  
    repaint();
  }
  public void mouseReleased(MouseEvent e){}
  public void mouseClicked(MouseEvent e){}
  public void mouseEntered(MouseEvent e){}
  public void mouseExited(MouseEvent e){}

  public static void main(String[] argumendid){
    Frame f=new Frame();
    f.add(new kukkuvring());
    f.setSize(300, 300);
    f.setVisible(true);
  }
}