小编Spe*_*akr的帖子

所以,我一直在努力重做我的代码,这样画的是所有在一个JPanel做一个JFrame代替我可以做一些非常需要的图像缓存.

我已经搜索了StackOverflow,我用手指搜索了我的手指,我认为我设置正确,但它不起作用.我只是在终端中得到一个空白的白色屏幕和一些错误脚本.任何帮助表示赞赏.这是代码

import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.geom.*;

public class RacerDoom extends JFrame {
    private JPanel panel;
    final int WIDTH = 900, HEIGHT = 640;
    int counter = 0;
    Rectangle left = new Rectangle(0,0,WIDTH/9,HEIGHT);
    Rectangle right = new Rectangle((WIDTH/9)*8,0,WIDTH/9,HEIGHT);
    Rectangle top = new Rectangle(0,0,WIDTH,HEIGHT/9);
    Rectangle bottom = new Rectangle(0,(HEIGHT/9)*8,WIDTH,HEIGHT);
    Rectangle center = new Rectangle((int)((WIDTH/9)*2.5),(int)((HEIGHT/9)*2.5),(int)((WIDTH/9)*4),(HEIGHT/9)*4);
    Rectangle p1 = new Rectangle(WIDTH/9,HEIGHT/2,WIDTH/30,WIDTH/30);
    Rectangle finishtop = new Rectangle(WIDTH/9,(HEIGHT/2)-HEIGHT/9,(int)((WIDTH/9)*1.5),HEIGHT/70);
    //Starting lines
    Rectangle startO = new Rectangle(WIDTH/9,HEIGHT/2,(int)((WIDTH/9)*1.5)/2,HEIGHT/140);
    public RacerDoom() { …