登入程序

import java.util.Scanner;
import java.util.jar.JarOutputStream;

public class sc {
    public static void main(String[] args) {
        String name = "张三";
        String pssword = "123";
        for(int i = 0;i < 3 ;i++){
            System.out.println("请输入用户名：");
            Scanner sc = new Scanner(System.in);
            String userName = sc.nextLine();
            System.out.println("请输入密码：");
            String userPwd = sc.nextLine();
            if(name.equals(userName) && pssword.equals(userPwd)){
                System.out.println("登入成功");
                break;
            }
            else{
                if(2 - i == 0)
                    System.out.println("输入失败！你的账户 被 锁定了！");
                else
                    System.out.println("登入失败，你还有"+ (2-i)+"次机会");

            }


    }
    }
}