java--登录脚本

package com.test;

import java.util.Scanner;

public class monidenglu {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);
for(int i=0;i<3;i++) {
System.out.println("please user:");
String userName= sc.nextLine();
System.out.println("please passwd:");
String passwd= sc.nextLine();
//字符串常量和字符串变量比较，常量在前
if("admin".equals(userName)&&"admin".equals(passwd) ) {
System.out.println("welcome suessen");
break;
}else {
if(i==2) {
System.out.println("stop");
}else {
System.out.println("还有"+(2-i)+"机会");
}
}
}

}
}