BallRunner processing - put this in the sketch window

Ball[] balls;

void setup(){
  size(640,480);
  balls = new Ball[10];
  initBalls();
}

void initBalls(){
  for(int i = 0; i < balls.length; i++) balls[i] = new Ball();
  //make any of the balls a different type here. Right now they are all type Ball.
}

void draw(){
  background(255);
  for(Ball b : balls){
    b.display();
    b.move();
    b.bounce();
  }
}