UML graphics
Abstract: Ignore the appearance and focus on the heart.
Encapsulation: Hides data and implementation, and provides public methods that can be called.
Inheritance: apples are fruit, for code reuse.
Polymorphism (polymorphism): many forms of a name, play football play basketball.
Association: The way in which objects interact with each other, the person uses the computer.
Aggregation: belonging to associations, stronger relationships, cars and tires.
Composition: It belongs to the association, the relationship is the strongest, people and brains, no people, no brains.
Drawing may use:
(Rain, written in Guangzhou, please indicate the source when reprinting, thank you)