java定义方法猜石头剪刀布

以下是Java定义方法猜石头剪刀布的示例代码：

import java.util.Scanner;

public class GuessGame {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("请输入玩家姓名：");
        String playerName = input.nextLine();
        System.out.println("欢迎来到猜拳游戏，" + playerName + "！");

        int total = 0; // 总局数
        int win = 0; // 胜利局数
        int lose = 0; // 失败局数
        int draw = 0; // 平局数

        while (true) {
            System.out.println("请选择出拳（1-石头，2-剪刀，3-布，0-退出游戏）：");
            int playerFist = input.nextInt();
            if (playerFist == 0) {
                break;
            }

            int computerFist = (int) (Math.random() * 3) + 1;
            System.out.println("电脑出拳：" + computerFist);

            if (playerFist == computerFist) {
                System.out.println("平局！");
                draw++;
            } else if (playerFist == 1 && computerFist == 2 || playerFist == 2 && computerFist == 3 || playerFist == 3 && computerFist == 1) {
                System.out.println("恭喜你，你赢了！");
                win++;
            } else {
                System.out.println("很遗憾，你输了！");
                lose++;
            }

            total++;        }

        System.out.println("游戏结束，" + playerName + "的战绩如下：");
        System.out.println("总局数：" + total);
        System.out.println("胜利局数：" + win);
        System.out.println("失败局数：" + lose);
        System.out.println("平局数：" + draw);
        System.out.println("胜率：" + (double) win / total * 100 + "%");
    }
}