import java.applet.Applet;
import java.awt.*;
public class Pallekr extends Applet{
 int x=20;
 int samm=2;
  public void paint(Graphics g){
     while(3>2){
       if(x>270){
        samm=-samm;
       }
       if(x<0){
       samm=-samm;
       }
       x=x+samm;
        g.setColor(Color.black);       //joonistatakse must ring
        g.drawOval(x, 90, 20, 20);
        try{Thread.sleep(50);}catch(Exception e){} //oodatakse veidi
        g.setColor(Color.white);       //ning kustutatakse see
        g.drawOval(x, 90, 20, 20);     //valgega üle joonistades
      
     }
  }
 public static void main(String[] argumendid){
    Frame f=new Frame();
    f.add(new Pallekr());
    f.setSize(300, 300);
    f.setVisible(true);
 }
}