用java写一个剪刀石头布的程序

以下是用Java编写的剪刀石头布游戏程序：

import java.util.Scanner;

public class RockPaperScissors {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter your choice (1: Rock, 2: Paper, 3: Scissors): ");
        int userChoice = scanner.nextInt();

        // Generate a random number between 1 and 3
        int computerChoice = (int)(Math.random() * 3) + 1;

        // Determine the winner
        if (userChoice == computerChoice) {
            System.out.println("It's a tie!");
        } else if (userChoice == 1 && computerChoice == 3 || 
                   userChoice == 2 && computerChoice == 1 ||
                   userChoice == 3 && computerChoice == 2) {
            System.out.println("You win!");
        } else {
            System.out.println("Computer wins!");
        }
    }
}

此程序要求用户输入选择（1表示石头，2表示纸，3表示剪刀），然后生成一个1到3之间的随机数作为计算机的选择，最后确定胜者并输出结果。