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编写一个Java Application程序，实现如下的设计目标：程序运行时自动产生1~100的随机数，接收用户键盘输入数据并给出提示信息，直至猜对。游戏者猜对后，显示猜测次数，并提供“重新开始”和“退出”功能。
import java.util.Scanner;
public class guessNumber {
int target;
public guessNumber() {
target = ((int) (Math.random()*100)+1)%100;
}
public void start() {
Scanner scr = new Scanner(System.in);
int count= 0;
while(true) {
System.out.println("请输入您猜的数字");
System.out.print(">");
int guess = scr.nextInt();
count++;
if(guess < target) {
System.out.println("猜低了");
}else if(guess>target) {
System.out.println("猜高了");
}else {
System.out.println("猜对了！您一共猜了"+count+"次！");
System.out.println("--------------------");
return;
}
System.out.println("--------------------");
}
}
public static void main(String[] args) {
while(true) {
System.out.println("******************");
System.out.println("*** 1. 开始游戏 ***");
System.out.println("*** 2. 退出游戏 ***");
System.out.println("******************");
System.out.println("请输入您的选择");
System.out.print(">");
int choose = 0;
Scanner scr = new Scanner(System.in);
choose = scr.nextInt();
switch(choose) {
case 1: new guessNumber().start(); break;
case 2: System.out.println("退出成功！"); return;
default: break;
}
}
}
}
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