**任务
完成人机猜拳互动游戏的开发

**主要功能
选取对战角色
猜拳
记录分数

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package com.fingerguessinggame;

import java.util.Scanner;

/*
* 用户类
* */
public class User {
    //用户姓名
    String userName;
    //用户积分
    int score;


    public int showFist(){
        System.out.print("请出拳：1.剪刀 2.石头 3.布（输入相应数字）：");

        Scanner input = new Scanner(System.in);

        int mynumber = input.nextInt();

        switch (mynumber){
            case 1:
                System.out.println("你出拳：剪刀");
                break;
            case 2:
                System.out.println("你出拳：石头");
                break;
            case 3:
                System.out.println("你出拳：布");
                break;
            default:
                System.out.println("输入错误");
                break;
        }

        return mynumber;

    }


}

package com.fingerguessinggame;

import java.util.Random;

/**
 * 计算机类：实现计算机出拳
 *
 */
public class Computer {
    //电脑名字
    String nameComputer;
    //电脑的分数
    int score;

    //设置一个1——3的随机整数
    Random random = new Random();
    int a = random.nextInt(3);

    //实现一个方法：自动出拳
    public int computerPunches(){

        switch (a+1){
            case 1:
                System.out.println(nameComputer+"出拳：剪刀");
                break;
            case 2:
                System.out.println(nameComputer+"出拳：石头");
                break;
            case 3:
                System.out.println(nameComputer+"出拳：布");
                break;
        }

        return a+1;

    }

}

package com.fingerguessinggame;

import java.time.Year;
import java.util.Objects;
import java.util.Scanner;

/**
 * 需求说明
 * 创建游戏类Game
 * 编写游戏类的初始化方法initial()
 * 编写游戏类的开始游戏方法startGame()
 */
public class Game {

    Scanner input = new Scanner(System.in);
    User User;//用户玩家
    Computer Computer;//电脑玩家
    int count;//对战次数
    int score;//分数

    //游戏类的初始化方法
    public void initial() {
        //初始化用户类
        User = new User();
        //初始化游戏类
        Computer = new Computer();
        //初始化对战次数
        count = 0;
    }


    /**
     * 开始游戏页面
     */
    public void startGame() {
        System.out.println("------------------------------------欢迎进入游戏世界---------------------------------------");
        System.out.println();
        System.out.println();
        System.out.println();
        System.out.println("                     ******************************************                         ");
        System.out.println("                     ****************  猜拳，开始   *************                         ");
        System.out.println("                     ******************************************                         ");
        System.out.println();
        System.out.println();
        System.out.println();
        System.out.println("出拳规则：1.石头 2.剪刀 3.布");
        System.out.print("请选着对方角色(1:刘备 2:孙权 3:曹操)(按序号选择角色):");
        int role = input.nextInt();
        switch (role) {
            case 1:
                Computer.nameComputer = "刘备";
                System.out.println("你选择了" + Computer.nameComputer + "对战");
                break;
            case 2:
                Computer.nameComputer = "孙权";
                System.out.println("你选择了" + Computer.nameComputer + "对战");
                break;
            case 3:
                Computer.nameComputer = "曹操";
                System.out.println("你选择了" + Computer.nameComputer + "对战");
                break;
            default:
                System.out.println("输入序号错误");
                break;
        }
        System.out.print("请输入你的姓名：");
        String own = input.next();
        User.userName = own;
        System.out.println(User.userName + "VS" + Computer.nameComputer + "对战！");
        System.out.println();

        System.out.print("要开始了吗？(y/n)  ");
        String ifstart = input.next();

        if (ifstart.equals("n")) {
            System.out.println("系统退出");
        }

        //用户得分
        User.score = 0;
        //电脑得分
        Computer.score = 0;

        while (ifstart.equals("y")) {

            //对战次数
            count++;
            int mynumber = User.showFist();//自己出拳
            int computernumber = Computer.computerPunches(); //电脑出拳

        /*System.out.println(mynumber);
        System.out.println(computernumber);*/

            if (mynumber == computernumber) {
                System.out.println("结果：和局，真衰！嘿嘿，等着瞧吧！");
            } else if (mynumber == 1 && computernumber == 2) {
                Computer.score++;
                System.out.println("结果：你输了");
            } else if (mynumber == 1 && computernumber == 3) {
                User.score++;
                System.out.println("结果：你赢了");
            } else if (mynumber == 2 && computernumber == 1) {
                User.score++;
                System.out.println("结果：你赢了");
            } else if (mynumber == 2 && computernumber == 3) {
                Computer.score++;
                System.out.println("结果：你输了");
            } else if (mynumber == 3 && computernumber == 1) {
                Computer.score++;
                System.out.println("结果：你输了");
            } else if (mynumber == 3 && computernumber == 2) {
                User.score++;
                System.out.println("结果：你赢了");
            }

            System.out.print("是否开始下一轮(y/n)  ");
            ifstart = input.next();
            if (ifstart.equals("n")){
                System.out.println("------------------------------------");
                System.out.println(User.userName+" VS "+Computer.nameComputer);
                System.out.println("对战次数："+count);
                System.out.println(User.score);
                System.out.println(Computer.score);
                if (User.score==Computer.score){
                    System.out.println("结果：打成平手，下次再和你一分高下");
                }else if (User.score>Computer.score){
                    System.out.println("结果：呵呵，我赢了");
                }else {
                    System.out.println("结果：惜败");
                }

            }

        }

    }
}

package com.fingerguessinggame;

public class Main {
    public static void main(String[] args) {
        Game game = new Game();
        game.initial();
        game.startGame();
    }
}