Java实现人机猜拳游戏

先写一个用户类：

import java.util.Scanner;

public class User {
    String uname;
    int uscore;
    int choice;

    public int showFist() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("\n请出拳:1.剪刀  2.石头    3.布");
        System.out.print("请输入你的选择：");
        choice = scanner.nextInt();
        switch (choice) {
            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("输入有误！");
                break;
        }
        return choice;
    }

}

再写一个计算机类

public class Computer {
    String cname;
    int cscore;
    int choice;

    public int showFist() {
        choice = (int) (Math.ra