public class AnimationClient{

  public static void main (String[]args){

    StdDraw.setScale (0, 60);

    StdDraw.enableDoubleBuffering(); //  makes animation smoother 
                                            //  try with and without double buffering

    for (int y=1; y<55; y++){

      StdDraw.clear();       // req'd for animation


      StdDraw.circle ( 15,y,    5);
      

      StdDraw.show();       // req'd for animationWHEN doublebuffering  
      StdDraw.pause(20);   // req'd for animation; to control speed

    }// endfor


  }// end main

}// end class