import java.util.ArrayList;

class GameCanvas {
    ArrayList<Sprite> sprites = new ArrayList<>();

    public void addSprite(Sprite x){
        if(sprites.size() < 20)
            sprites.add(x);
    }

    public void drawSprites() {
        // Enhanced for loop.
        for ( Sprite sprite : sprites) {
            sprite.draw();
        }
    }
}