Java_简单模仿登陆

import java.util.Scanner;

public class Logon
{
	public static void main(String args[])
	{
		int count = 0;//计数器
		System.out.println("欢迎使用小东系统！");
		while (count < 3)
		{
			Scanner scan = new Scanner(System.in);//创建Scanner对象
			System.out.println("请输入用户账号");
			String user = scan.next();//获取键盘上的输入
			if (user.equals("xiaodong"))
			{
				System.out.println("请输入密码");
				String password = scan.next();
				if (password.equals("admin"))
				{
					System.out.println("Welcome!" + user);
					break;
				}
				else 
				{
					if (2 == count)
					{
						System.out.println("程序退出！");
						break;
					}
					else
					{
						System.out.println("密码错误！您还有" + (2-count) + "次机会！");
						++count;
					}
				}
			}
			else	
			{
				System.out.println("没有该用户名！程序退出！");
				break;
			}
		}
	}
}