台球小游戏

 

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package Game;   import  java.awt.*;   import javax.swing.*;   public class Ballgame extends JFrame {//框       Image ball = Toolkit.getDefaultToolkit().getImage("images/ball.png");     Image desk=Toolkit.getDefaultToolkit().getImage("images/desk.jpg"); double degree=3.14/3;//弧度    double x=100;//小球的坐标    double y=100;     //画窗口的方法     public void paint(Graphics  g){         System.out.println("窗口被画了一次！");         g.drawImage(desk,0, 0,null);//先画桌面再画球         g.drawImage(ball, (int)x, (int)y, null); x=x+10*Math.cos(degree); y+=10*Math.sin(degree); if(y>=500-70||y<70){     degree=-degree; } //左右边界 if(x<70||x>796){     degree=3.14-degree; }       }           //窗口加载     void launchFrame(){         setSize(856,500);         setLocation(400,400);         setVisible(true);         //重画窗口         while(true){             repaint();//调用paint             try {                 Thread.sleep(80);             } catch (InterruptedException e) {                 // TODO Auto-generated catch block                 e.printStackTrace();             }         }     }           //main方法是程序执行的入口     public static void main(String[] args){         System.out.println(" 我是尚学堂高淇，这个游戏项目让大家体验编程的快感，寓教于乐！");         Ballgame game = new Ballgame();         game.launchFrame();     }       }