这题Java题怎么做

Question

如题所述

Answer 1

import java.util.Scanner;

public class Demo1{
    public static void main(String[] args){
        int i = 3; //用于判断三次登录失败的
        Scanner scanner = new Scanner(System.in);
        while(true){
            System.out.print("请输入用户名:");
            String account = scanner.next();
            System.out.print("请输入密码:");
            String pwd = scanner.next();
            if (account.equals("jim")&&pwd.equals("123456")) {
                System.out.println("登录成功");
                break;
            }
            
            i--;
            System.out.println("你还有"+i+"次机会");
            System.out.println();
            if (i==0) {
                System.out.println("对不起，您三次输入均错误");
                return;
            }
        }
    }
}

Answer 2

思路 可以创建一个变量来存储登陆次数