import java.awt.*;
import java.awt.event.*;
public class Pendel extends Frame implements MouseMotionListener{
  public Pendel(){
    setSize(300, 300);
    setVisible(true);
    addMouseMotionListener(this);
  }
  public void mouseMoved(MouseEvent e){}
  public void mouseDragged(MouseEvent e){
    Graphics g=this.getGraphics();
    g.setColor(Color.yellow);
    g.fillRect(0, 0, getSize().width, getSize().height);
    g.setColor(Color.black);
    g.drawOval(e.getX(), e.getY(), 10, 10);
    g.drawLine(e.getX(), e.getY(), 150, 10);
  }
  public static void main(String argumendid[]){
    new Pendel();
  }
}