Classes' diagrams

General representation of a class (i.e. objects' type/set called instances).

Classes' representations

Attributes & Operations (also called methods) have:

1. visibility for access restriction:

• - means "private" and is accessible only in the context of the class (default for attributes)
• # means "protected" and is accessible only in the context of the class and its subclasses
• + means "public" and is accessible by any (default for operations)

2. Types written name : type. The default type for operations is void

NB. default values can be omitted to simplify diagrams.