Detailed explanation of proxy pattern and decoration pattern examples of Java design pattern

This paper describes the proxy pattern and decoration pattern of Java design pattern. Share with you for your reference, as follows:

The two modes are as like as two peas, because I find that the two modes are almost the same.

I also searched some information on the Internet and found that there are still some differences between the two. While learning, we also make this confusion clear.

definition:

Proxy mode, which provides a proxy for other objects to control access to this object.

Decoration mode, dynamically adding some additional responsibilities to an object.

The proxy mode, which is well understood, is to encapsulate an object again, and then access the encapsulated object.

Because the proxy object has replaced the proxy object.

The decoration mode adds functions to an object, and the image is to stand aside as a waiter to provide services.

Therefore, the fundamental difference is that the decoration mode object is still in the field, not replacing the original object, but providing services on one side.

The views expressed in this article are personal understanding and only responsible for myself.

Examples are given below:

The above is a common interface and implementation, and the following is a pattern example

proxy pattern

Decoration mode

The key is calling, which is the main difference between the two modes!

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