In software engineering, a class diagram in the Unified Modeling Language is a type of static structure diagram that describes the structure of a system by showing the system’s classes, their attributes, operations (or methods), and the relationships among objects.
Visibility
To describe the visibility (or encapsulation) of an attribute or method/function that is a part of a class (i.e. a class member), optional notation may be placed before that members’ name:
+Public-Private#Protected~Package/Internal
Relationships
| Type | Description |
|---|---|
<|-- | Inheritance |
*-- | Composition |
o-- | Aggregation |
--> | Association |
-- | Link (Solid) |
..> | Dependency |
..|> | Realization |
.. | Link (Dashed) |