[Design Pattern] Command pattern

Find the company code seems to be useful to Command Pattern, review and revisit.

The class diagram structure of Command Pattern is as follows:

Refer to "Head first Design Patterns" P245 drawing

I understand the Command Pattern.

Caller, action, subject respectively, for Invoker, Command, Receiver in class diagrams, they can all be configured by user Client

Resources:

Head first Design Pattern.

Recommended Tools:

Convenient online UML drawing tools:

Lucidchart, seven days free, follow-up fee.

ProcessOn, free

[Design Pattern] Command pattern