JAVA击球游戏

package com.lzw; import java.awt.*; import java.util.*; import javax.swing.*; public class SleepMethodTest extends JFrame { private Thread t; // 定义颜色数组 //setVisible(true); // 使窗体可见 // 设置窗体关闭方式 //setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); private static Color[] color = { Color.orange, Color.BLUE, Color.CYAN, Color.GREEN, Color.ORANGE, Color.YELLOW, Color.RED, Color.PINK, Color.LIGHT_GRAY }; private static final Random rand = new Random();// 创建随机对象 private static Color getC() {// 获取随机颜色值的方法 return color[rand.nextInt(color.length)]; } public SleepMethodTest() { t = new Thread(new Runnable() {// 创建匿名线程对象 int x = 60;// 定义初始坐标 int y = 60; int m = 20; int n = 0; int r=20; int R; public void run() {// 覆盖线程接口方法 while (n++&l