java - Declaring an object that implements an interface

Question

I'm trying to declare an object which must implement a specific interface. I thought the following would work in Java as it does in some other languages but I'm at a loss here:

Class<? implements **theInterface**> implementingObject

Any pointers would be appreciated

Answer 1

对于泛型，无论它是类还是接口，都使用“扩展”。

Class<? extends **theInterface**> implementingObject

Answer 2

您在这里声明的不是实现接口的对象，而是实现该接口的对象的类。实现接口的对象被简单地声明为接口类型，即

theInterface implementingObject;