JAVA反射机制是在运行状态中，对于任意一个类，都能够知道这个类的所有属性和方法；对于任意一个对象，都能够调用它的任意一个方法和属性；这种动态获取的信息以及动态调用对象的方法的功能称为java语言的反射机制-JAVA reflection mechanism is in the operating state, for any class, we are able to know all the properties and methods of this class　For any object, you can call any of its methods and properties　obtain information about this dynamic and the dynamic call reflection function object method called java language