javaString应用，登录--学习笔记

javaString类应用案列，一个简单的登录系统

import java.util.Scanner;

public class login {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i < 3; i++) {
            System.out.print("请输入用户名：");
            String username = sc.next();
            System.out.print("请输入密码:");
            String password = sc.next();
            if(login(username,password)){
                System.out.println("登陆成功！");
                return;
            }
            System.out.println("账号密码错误，请重新输入!(还剩"+(2-i)+"次机会)");
        }
        System.out.println("bye");
    }
    public static boolean login(String username, String password){
        return username.equals("zeyu") && password.equals("123456");
    }
}