java学习日记20230522-Properties

Properties继承了HashTable并且实现了Map接口，也是以键值对的形式保存数据

Properties经常用于xxx.properties文件中加载Properties对象，并进行读取和修改

public class PropertiesExercise {
    public static void main(String[] args) {
        Properties properties = new Properties();
        properties.put("test",10);
        properties.put(1,20);
        properties.put("1",30);
        System.out.println(properties.get("test"));
    }
}