Detailed explanation of object structure pattern of composite model in Java

Detailed explanation of object structure pattern of composite model in Java

1、 Intention

Combine objects into a tree structure to represent a "part whole" hierarchy. Composite enables users to use single objects and composite objects consistently.

2、 Applicability

You want to represent the part of the object - the overall hierarchy

You want users to ignore the difference between composite objects and single objects. Users will use all objects in the composite structure uniformly.

3、 Structure

4、 Code

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