Nhiệm vụ | Cấp 2 | bài 8

1) In a separate file, create a public CustomInvocationHandler class that will be the invocation handler when creating a proxy object. 2) CustomInvocationHandler must support the InvocationHandler interface.

Create a public getProxy() method in the Solution class: 1) The getProxy() method must return a proxy for any interface that inherits Item. 2) The getProxy() method must have two parameters.