Properties集合类

Properties集合类的练习
    Properties中存储的都是键值对，用=连接

 public static void main(String[] args) throws IOException {
        Properties pro = new Properties();

        //获取src路径下文件的相对路径
        ClassLoader classLoader = PropertiesDemo.class.getClassLoader();
        URL resource = classLoader.getResource("jdbc.properties");
        //得到的是一个对象
        String path = resource.getPath();
        FileReader fr = new FileReader(path);

        //加载文件
        pro.load(fr);
        //获取数据
        String url = pro.getProperty("url");
        String user = pro.getProperty("user");
        String password = pro.getProperty("password");
        String driver = pro.getProperty("driver");

        System.out.println(url);
        System.out.println(user);
        System.out.println(password);
        System.out.println(driver);

        fr.close();
    }

来源：https://blog.csdn.net/TTTiaotiao/article/details/99551056