案例：游戏次数

时间：2020-04-25 01:16:32 阅读：78 评论：0 收藏：0 [点我收藏+]

标签：static iter int() rand store exce 取数获取实现

技术图片

游戏类：

public class GuessNumber {
    public GuessNumber() {
    }
    public static void start(){
        //随机数生成数字
        Random r = new Random();
        int number = r.nextInt(100) + 1;

        while (true){
            Scanner sc = new Scanner(System.in);
            System.out.println("请输入你要猜的数字：");
            int guessNumber = sc.nextInt();
            if (guessNumber > number){
                System.out.println("你猜的数字："+guessNumber+"大了");
            }else if (guessNumber<number){
                System.out.println("你猜的数字："+guessNumber+"小了");
            }else {
                System.out.println("恭喜你猜对了");
                break;
            }
        }
    }
}

View Code

测试类：

public class PropertiesTest {
    public static void main(String[] args)throws IOException {
        //从文件中读取数据到Properties集合，用load()方法实现
        Properties prop = new Properties();

        FileReader fr = new FileReader("myFile\\game.txt");
        prop.load(fr);
        fr.close();

        //通过Properties集合获取玩游戏的次数
        String count = prop.getProperty("count");
        int number = Integer.parseInt(count);
        //判断次数是否到了3次
        if (number >= 3){
            System.out.println("游戏试玩已结束，想玩请充值");
        }else{
            GuessNumber.start();
            //次数+1
            number++;
            prop.setProperty("count",String.valueOf(number));
            //重新写回文件
            FileWriter  fw = new FileWriter("myFile\\game.txt");
            prop.store(fw,null);
            fw.close();
        }
    }
}