Java游戏石头布剪刀。找不到main方法用户控制的循环来继续播放

import java.util.Scanner;

public class RockPaperScissorsGame {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        
        while (true) {
            System.out.println("请选择：1.石头  2.布  3.剪刀  0.退出");
            int userChoice = scanner.nextInt();
            
            if (userChoice == 0) {
                System.out.println("游戏结束");
                break;
            } else if (userChoice < 1 || userChoice > 3) {
                System.out.println("输入无效，请重新选择");
                continue;
            }
            
            int computerChoice = (int) (Math.random() * 3) + 1;
            System.out.println("电脑选择了：" + computerChoice);
            
            if (userChoice == computerChoice) {
                System.out.println("平局");
            } else if ((userChoice == 1 && computerChoice == 3) ||
                       (userChoice == 2 && computerChoice == 1) ||
                       (userChoice == 3 && computerChoice == 2)) {
                System.out.println("你赢了");
            } else {
                System.out.println("电脑赢了");
            }
        }
        
        scanner.close();
    }
}