java中猜拳游戏四个类代码

在Java中实现一个简单的猜拳游戏，通常会涉及以下几个类：

1. **Player** 类：代表玩家，可以有名字和选择（石头、剪刀、布）的方法。

public class Player {
    private String name;
    
    public Player(String name) {
        this.name = name;
    }
    
    public void choose(int choice) {
        if (choice == 0 || choice == 1 || choice == 2) {
            this.choice = choice; // 假设choice字段用于存储玩家的选择（0 - 石头，1 - 剪刀，2 - 布）
            System.out.println(name + "选择了：" + getChoiceName(choice));
        } else {
            throw new IllegalArgumentException("Invalid choice");
        }
    }
    
    private String getChoiceName(int choice) {
        switch (choice) {
            case 0: return "石头";
            case 1: return "剪刀";
            case 2: return "布";
            default: return null;
        }
    }
}

2. **Computer** 类：代表电脑对手，随机生成选择。

import java.util.Random;

public class Computer {
    private Random random;
    
    public Computer() {
        random = new Random();
    }
    
    public int choose() {
        return random.nextInt(3); // 返回0到2之间的随机数，对应石头、剪刀、布
    }
}

3. **Game** 或 **Match** 类：包含游戏规则，处理输入和比较结果。

public class Game {
    private Player player;
    private Computer computer;
    
    public Game(Player player, Computer computer) {
        this.player = player;
        this.computer = computer;
    }

    public void start() {
        player.choose();
        int computerChoice = computer.choose();
        System.out.println("电脑选择了：" + Game.getChoiceName(computerChoice));
        
        // 比较并显示结果
        int result = compare(player.choice, computerChoice);
        displayResult(result);
    }
    
    private static String getChoiceName(int choice) {
        // 使用公共静态方法避免每个类实例都创建相同的switch结构
    }
    
    private int compare(int playerChoice, int computerChoice) {
        // 简单的比较规则，例如0 - 平局，1 - 玩家赢，-1 - 电脑赢
    }
    
    private void displayResult(int result) {
        // 显示比赛结果
    }
}

4. **Main** 类（入口点）：

public class Main {
    public static void main(String[] args) {
        Player humanPlayer = new Player("人类");
        Computer aiPlayer = new Computer();
        Game game = new Game(humanPlayer, aiPlayer);
        game.start();
    }
}