java最简单的登录 

 1   public static void main(String[] args) {
 2         Scanner sc = new Scanner(System.in);
 3         String user ;
 4         String poaword ;
 5         for (int i = 0; i < 3; i++) {
 6             user = sc.nextLine();
 7             poaword =sc.nextLine();
 8             if("user".equals(user) && "pass".equals(poaword)){
 9                 System.out.println("输入正确，登录成功");
10                 break;
11             }else {
12                 if(i < 2 ){
13                     System.out.println("账号密码错误，您还有" + (2-i) +"次机会");
14                 }else{
15                     System.out.println("机会用完，结束");
16                     break;
17                 }
18             }
19         }
20 
21 
22 
23     }

 

posted @ 2021-12-14 13:34  不爱缺氧i  阅读(92)  评论(0)    收藏  举报