UML Class Diagram

Symbol:

+:p Ublic

-:p Rovite

#:p Rotected

~:p ackage

Relationship:

Relationship Name	Code relations	Uml
Generalization (generalization)	Inherited	Solid Line Triangle Arrow
Implementation (Interface realization)	Implementation of subclass inheritance of virtual base function	Dashed triangular arrow
Dependency (Dependency)	One class as a function parameter or return value of another class	Dashed arrows
Association (Directed Association)	Combination of Classes	Solid line Arrows
Aggregation (Aggregation)	The relationship between the whole and the part, the life cycle is not unified	Hollow Square Arrow
Combination (composition)	The relationship between the whole and the part, the life cycle is unified	Solid Square Arrow

UML Class Diagram