HKJ.1125的博客import java.util.*; public class HelloWorld { public static void main(String[] args) { System.out.println("请输入账号:"); Scanner sc = new Scanner(System.in); int a = sc.next().charAt(0...
jinxueHou专栏的博客package javaProject; import java.util.Scanner; public class test { private String []userBox = {...//数据库存储的账号和密码,private修饰,只能在本类中使用 public static void main(String[] args)...