Java之IO流

import java.io.*;
public class text3
{
    public static void main(String []args) throws Exception
    {
        for(int i = 0;i<5;i++)
        {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            String line;
            System.out.println("请输入您的密码：");
            if(((line = br.readLine())).equals("123456"))
            {
                System.out.println("恭喜进入游戏！");
                break;
            }
            else
            System.out.println("密码错误，结束游戏！");
        }
        System.exit(0);
    }
}

运行结果如下：