java小程序 猜拳

好久没写代码了  前天写了个猜拳  有改进或者错误的地方，希望大家指出   谢谢

核心判断：

1:石头 2：剪刀 3：布

电脑     玩家      做差     输赢

 1            1          0         平

               2         -1         电脑win

               3         -2         玩家win

2             1          1          玩家win

               2          0          平

               3         -1          电脑win

3             1         2            电脑win

               2         1            玩家win

               3         0            平

下面是代码：

Compare.java //判断模块

package com.caiquan;

public class Compare {
public void compare(int c,int g){
    if(c == g){
        System.out.println("平局！");
    }else if((c-g) == -1 || (c-g) == 2){
        System.out.println("电脑win!");
    }else{
        System.out.println("You win!");
            }
    }
}

RandomTest.java  //主模块

package com.caiquan;


import java.util.Random;
import java.util.Scanner;

public class RandomTest {
    public static void main(String[] args) {
        int mind = 1;
        while(mind != 0){
            System.out.println("please input your choose(1~3)<1:石头 2：剪刀 3：布>:");
            Scanner input = new Scanner(System.in);
            int gamer = input.nextInt();
            if(gamer < 1 || gamer > 3){
                System.out.println("your input is error!");
                System.exit(0);
            }
            Random r = new Random();
            int computer = r.nextInt(3)+1;
            Compare co = new Compare();
            switch(computer){
            case 1: System.out.println("电脑出的是：石头");
                        co.compare(1,gamer);
                        break;
            case 2: System.out.println("电脑出的是：剪刀");
                        co.compare(2,gamer);
                        break;
            case 3: System.out.println("电脑出的是：布");
                        co.compare(3,gamer);
                        break;
            }
            System.out.println("你的游戏次数为："+mind);
            System.out.println("是否继续游戏（1:继续 2：退出）?");
            int m = input.nextInt();
            if(m < 1 || m > 2){
                System.out.println("输入有误，游戏结束！");
                System.exit(0);
            }
            if(m == 1){
                mind++;
            }else{
                mind = 0;
            }
        }
        System.out.println("谢谢使用！");
    }
}