桌球游戏，高度宽度可以随意设置

import javax.swing.*;
import java.awt.*;

public class BallGame extends JFrame {
   Image ball = Toolkit.getDefaultToolkit().getImage("Image/whiteball.png");
   Image task = Toolkit.getDefaultToolkit().getImage("Image/zhuozizhen.jpg");
   int x =100;
   int y =100;
   boolean right = true;
   public  void paint(Graphics g){
       System.out.println("窗口被划了");
       g.drawImage(ball,x,y,null);
       g.drawImage(task,0,0,null);
       if(right){
           x=x+6;
       }else{
           x=x-6;
       }
       if(x>635-30-30){
        right = false;
       }
       if(x<30){
           right = true;
       }
   }

   void launchFrame(){
       setSize(653,265);
       setLocation(400,400);
       setVisible(true);
       while(true){
        repaint();
        try {
            Thread.sleep(40);
        }catch (Exception e){
                e.printStackTrace();
        }
       }
   }

    public static void main(String[] args) {
       BallGame b = new BallGame();
       b.launchFrame();
    }
}