Pattern Study - UML

Class 

• Class
• - attribute
• + operations()

Interface

• <<interface>>
• IClass
• +operations()

Note

• descriptive text

Package (grouping of classes and interfaces

• Package

Inheritance

• A <--- B (horizontal) : B inherits from A

Realization

• A <-- B (horizontal): B implements A

Association

• A --- B: A and B call and access each other's elements

Association (one way)

• A --> B: A can call and access B's elements, but no vice versa

Aggregation

• A <>--- B:  A has a B, and B can outlive A

Composition

• A <<>>--- B:  A has a B, and B depends on A.