import java.applet.*;
import java.awt.*;
public class Ruum1 extends Applet implements Runnable{
  double nurk=0;
  double nurgasamm=0.05;
  double raadius=50;
  int keskx=100;
  int kesky=100;
  public Ruum1(){new Thread(this).start();}
  void liigu(){
    nurk=nurk+nurgasamm;
  }
  void joonista(Graphics g){
     int x=keskx+(int)(raadius*Math.cos(nurk));
     int y=kesky-(int)(raadius*Math.sin(nurk));
     g.drawOval(x-5, y-5, 10, 10);
  }
  public void run(){
    while(true){
      try{
        Graphics g=getGraphics();
        liigu();
        g.setColor(Color.black);
        joonista(g);
        Thread.sleep(300);
        g.setColor(getBackground());
        joonista(g);
      }catch(Exception e){}
    }
  }
  public static void main(String arg[]){
    Frame f=new Frame();
    f.add(new Ruum1());
    f.setSize(200, 200);
    f.setVisible(true);
  }
}