在老师的指导下做了一个猜拳的小游戏，有一个computer类，person类，gamerule类，test测试类，以下是我的具体代码，希望大家指正，谢谢。

 1 package com.game.shihan;
 2 
 3 public class Computer {
 4     String name;
 5     int score;
 6     
 7 public int showFist(){
 8         
 9         int num = (int)(Math.random() * 10) % 3 + 1;
10         switch(num){
11             case 1:
12                 System.out.println(name + "出剪刀");
13                 break;
14             case 2:
15                 System.out.println(name + "出石头");
16                 break;
17             case 3:
18                 System.out.println(name + "出布");
19                 break;
20         }
21         return num;
22         
23     }
24 
25 }
 1 package com.game.shihan;
 2 import java.util.Scanner;
 3 public class Person {
 4     String name;
 5     int score;
 6     Scanner input = new Scanner(System.in);
 7     public int showFist(){
 8         
 9         System.out.println("请出拳：1.剪刀 2.石头 3.布");
10         int num = input.nextInt();
11         switch(num){
12             case 1:
13                 System.out.println("你出剪刀");
14                 break;
15             case 2:
16                 System.out.println("你出石头");
17                 break;
18             case 3:
19                 System.out.println("你出布");
20                 break;
21         }
22         return num;    
23     }
24 
25 }
 1 package com.game.shihan;
 2 import java.util.Scanner;
 3 public class GameRule {
 4     Scanner input = new Scanner(System.in);
 5     int personNum = 0;
 6     int computerNum = 0;
 7     int count = 0;
 8     Person person = new Person();
 9     Computer computer = new Computer();
10     //开始游戏
11     public void StartGame(){
12         
13         person.score = 0;
14         computer.score = 0;
15         System.out.println("欢迎进入人机猜拳游戏");
16         System.out.println("请输入你的名字：");
17         person.name = input.next();
18         System.out.println("你想与谁对决：1.C罗 2.贝尔 3.本泽马");
19         int role = input.nextInt();
20         
21         switch(role){
22             case 1:
23                 computer.name = "C罗";
24                 break;
25             case 2:
26                 computer.name = "贝尔";
27                 break;
28             case 3:
29                 computer.name = "本泽马";
30                 break;
31         }
32         System.out.println("你确定开始游戏吗？(y/n)");
33         if(input.next().equals("y")){
34             System.out.println("游戏开始：" + person.name +"\t" + "VS" + "\t" + computer.name);
35             do{
36                 personNum = person.showFist();
37                 computerNum = computer.showFist();
38                 if(isWin() == 0){
39                     System.out.println("胜负未分");
40                 }else if(isWin() == 1){
41                     person.score++;
42                     System.out.println("你赢了！");
43                 }else{
44                     computer.score++;
45                     System.out.println("电脑赢了！");
46                 }
47                 count++;
48                 System.out.println("继续PK吗?(y/n)");
49             }while(input.next().equals("y"));
50     }
51                 
52     }
53     //开始游戏
54     //判断胜负平
55     public int isWin(){
56         if(personNum == computerNum){
57             return 0;//平局
58         }else if(personNum == 1 && computerNum == 3 || personNum == 2 && computerNum == 1 || personNum == 3 && computerNum == 2){
59             return 1;//玩家胜出            
60         }else{
61             return -1;//电脑胜出    
62         }
63     }
64     //判断胜负平
65     //统计战果
66     public void showResult(){
67     
68         System.out.println("共比试了" + count + "场，你赢了" + person.score + "场，" + computer.name + "赢了" + computer.score + "场,平局" + (count - person.score-computer.score) +"场");
69         if(person.score > computer.score){
70             System.out.println("恭喜，你赢了！");
71         }else if(person.score == computer.score){
72             System.out.println("平局");
73         }else{
74             System.out.println("哈哈," + computer.name + "赢了");
75         }
76     }
77     //统计战果
78 }
 1 package com.game.shihan;
 2 
 3 public class Test {
 4 
 5     public static void main(String[] args) {
 6         GameRule g = new GameRule();
 7         g.StartGame();
 8         g.showResult();
 9     }
10 
11 }