association and aggregation

Connections and differences between inheritance, implementation, dependency, association, aggregation, and combination These relationships are described respectively:Inheritance A class (called a subclass or sub-interface) inherits the functions of

Reprint: http://blog.csdn.net/kevin_darkelf/article/details/11371353Relationships and differences between inheritance, implementation, dependency, association, aggregation, and compositionThese relationships are described separately:InheritedRefers

When learning object-oriented design object relationships, the differences between dependency, association, aggregation, and combination are confusing. In particular, the last three types only have differences in semantics. Semantics refers to

  Inter-class relationship In the class diagram, apart from describing the names, attributes, and operations of individual classes, we also need to describe the relationships between classes because no classes exist independently, they usually need

UML relationship: Inheritance/generalization, implementation, dependency, association, aggregation, combination of association and difference, uml2016-07-12 These relationships are described respectively: UML relationships: the relationships and

Inter-class relationship In the class diagram, apart from describing the names, attributes, and operations of individual classes, we also need to describe the relationships between classes because no classes exist independently, they usually need to

Class diagram is used to describe the classes contained in the system and the relationship between them, to help people simplify the understanding of the system, it is an important product of the system analysis and design phase, but also the system

Inter-class relationship In the class diagram, apart from describing the names, attributes, and operations of individual classes, we also need to describe the relationships between classes because no classes exist independently, they usually need

The relationship between classes and classes plays an important role in understanding object-oriented, and is often asked in interviews before, and I'll introduce you here. The following relationship exists between classes and classes: (1)

UML diagram example: (you can use startuml for drawing, small size ^_^) Http://www.blogjava.net/lukangping/archive/2010/08/01/327693.html Aggregation: indicates that two objects are integral and partial.WeakLink, and the lifecycle of some parts