java一个简单小程序，求高手帮忙编写，万分感谢

class Ball {

public void play() {

System.out.println("玩球儿晌烂...")

}

}

class Football extends Ball {

public void play() {

System.out.println("使用足球运动")

}

}

class Basketball extends Ball {

public void play() {

System.out.println("宴运漏使用篮球运动")

}

}

public class TestMain {

public static void main(String[] args) {

TestMain tm = new TestMain()

tm.testPlay()

}

public void testPlay() {

Ball ball = new Football()

ball.play()

ball = new Basketball()

ball.play()

}

}

/*

D:\>javac TestMain.java

D:\>java TestMain

使用足球运动

使用篮球悄凯运动

*/

控制台小游戏 class YZDEL\r\n{\r\n public static void main(String[] args)\r\n {\r\njava.util.Random Shiji = new java.util.Random()\r\n java.util.Scanner Shuru = new java.util.Scanner(System.in)\r\n java.util.Scanner Nandu = new java.util.Scanner(System.in)\r\n int YingxHP = 20\r\n int YingxMP = 0\r\n int MogHP = 20\r\n int MogMP = 0\r\n int MogDo = 0\r\n int fangyu = 0\r\n System.out.println("┏━━━━_┏━━┣┣┓　_　┓┏━┳━┳┓┓━┓　")\r\n System.out.println("┏┣━━━┓┏━━┣┣┓　┃┏　┃　┃┓┃　_　")\r\n System.out.println("┣┣━━━┫_━━┻__　┃_┓┃　┃_┏━┣━━┓")\r\n System.out.println("┣┣━━━┫┏━━━━┓_━━┣━┛┗━┻━┻┛┃┃")\r\n System.out.println("┏┣━━━┓┣━━━━┫　┃┃┃┗__┃嫌配拦┃┣━_")\r\n System.out.println("　┛┗_┗━━━━_┗___━━┛┛┗━__━┛")\r\n System.out.println()\r\n System.out.println(" 作者:天狐空幻")\r\n System.out.println()\r\n System.out.println("说明:勇者的 *** 作方式为以下所示:")\r\n System.out.println(" 使用攻击需消耗1MP 伤害1HP")\r\n System.out.println(" 使用蓄力可增加1MP 伤害0HP")\r\n System.out.println(" 使用躲闪需消耗0MP 伤害0HP 躲避攻击")\r\n System.out.println(" 使用重击需消耗3MP 伤害2HP 防御无效")\r\n System.out.println(" 恶龙攻击力高， 注意防御是取胜的关键")\r\n System.out.println(" 恶龙卖肆MP达到4时可能会放出火焰无法躲避")\r\n System.out.println(" 准备说明完毕,那么让我们来挑战恶龙吧！")\r\n System.out.println("==================================")\r\n //难度选择\r\n System.out.println("请选择难度")\r\n System.out.println("1.娱乐 2.挑芹胡战 3.噩梦")\r\n int ND = Nandu.nextInt()\r\n System.out.println("==================================")\r\n while(true) \r\n { \r\n //HP，MP的显示 \r\n System.out.print("勇者: ")\r\n System.out.print(" HP ")\r\n for(int x=YingxHPx>0x--) System.out.print("*")\r\n System.out.print(" "+YingxHP)\r\n System.out.println()\r\n System.out.print(" ")\r\n System.out.print(" MP ")\r\n for(int x=YingxMPx>0x--) System.out.print("*")\r\n System.out.print(" "+YingxMP)\r\n System.out.println()\r\n System.out.print("恶龙: ")\r\n System.out.print(" HP ")\r\n for(int y=MogHPy>0y--) System.out.print("*")\r\n System.out.print(" "+MogHP)\r\n System.out.println()\r\n System.out.print(" ")\r\n System.out.print(" MP ")\r\n for(int y=MogMPy>0y--) System.out.print("*")\r\n System.out.print(" "+MogMP)\r\n System.out.println()\r\n System.out.println("==================================")\r\n //胜利判定 \r\n if(YingxHP2&&MogMP>2) MogDo = 2\r\n else if(MogMP0) MogDo=2 \r\n if(Do==2&&MogMP==0) MogDo=0\r\n if(Do==3&&MogMP=4) MogDo=3}//变态判定。。 \r\n //战斗分析\r\n //防御 \r\n if(Do==3) {fangyu=1System.out.println("你灵巧的躲避攻击！")}\r\nif(MogDo==1) {fangyu=1System.out.println("恶龙进行防御！")}\r\n //角色判定 \r\n if(Do==1&&YingxMP==0) {System.out.println("MP不足！")}\r\n if(Do==1&&YingxMP>0) {\r\nif(fangyu==0) {MogHP=MogHP-1YingxMP=YingxMP-1System.out.println("你发动攻击！")}\r\nif(fangyu==1) {YingxMP=YingxMP-1System.out.println("你的攻击被格挡！")}} \r\n if(Do==2) {YingxMP=YingxMP+1System.out.println("你进行蓄力！")}\r\n if(Do==4&&YingxMP2) {MogHP=MogHP-2YingxMP=YingxMP-3System.out.println("你发动重击！")}\r\n if(Do>4) System.out.println("你不知所措...")\r\n //敌人判定 \r\n if(MogDo==2&&MogMP==0) {System.out.println("恶龙在发呆！")}\r\n if(MogDo==2&&MogMP>0) {\r\nif(fangyu==0) {YingxHP=YingxHP-2MogMP=MogMP-1System.out.println("恶龙发动攻击！")}\r\nif(fangyu==1) {MogMP=MogMP-1System.out.println("恶龙的攻击被躲开了！")}} \r\n if(MogDo==0) {MogMP=MogMP+1System.out.println("恶龙进行蓄力！")} \r\n if(MogDo==3&&MogMP3) {YingxHP=YingxHP-4MogMP=MogMP-4System.out.println("恶龙发动火焰吐吸！躲避不能！")} \r\n //结束 \r\n fangyu = 0\r\n MogDo = 0\r\n System.out.println("____________________")\r\n System.out.println()\r\n System.out.println("==================================") }\r\n }\r\n}

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