Chapter 4 Building Use Case Diagrams

Actor property sheet Implementation Classes tab

The Implementation Classes tab lists the classes and interfaces used to implement the actor.

Creating a class or an interface

To add a class or interface to the list, use one of the following tools:

Tool	Action
	Add Objects – Opens a dialog box from which you can select any class or interface currently existing in the model to implement the actor.
	Create a New Class – Creates a new class to implement the actor. The new class is available in the Classes folder of the current model or package in the Browser for use in other diagrams.
	Create a New Interface - Creates a new interface to implement the actor. The new interface is available in the Interfaces folder of the current model or package in the Browser for use in other diagrams.

For example, an actor Car needs the classes Engine and Motorway to perform its task. They are shown as related to the actor in the following figure:

For more information on implementation classes, see section Linking a class or an interface to a use case, in chapter Working with Object-Oriented Models.

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