pinballfire.java

一些JAVA的小程序

import java.awt.*;
class PinBallFire {
  public PinBallFire(Point where) {locX = where.x; locY = where.y;}

  private int locX;
  private int locY;

  public void paint(Graphics g){
    g.setColor(Color.white);
    g.fillRect(locX, locY, 30, 30);
    g.setColor(Color.red);
    g.fillOval(locX, locY,30,30);
  }

  public boolean includes(int x, int y)
    {return(x > locX) && (y > locY);}

  public Ball fire(int x, int y)
    {return new PinBall(new Point(x, y));}
}