Interfaces (OOM)

An interface is similar to a class but it is used to define the specification of a behavior. It is a collection of operations specifying the externally visible behavior of a class. It has no implementation of its own.

An interface can be created in the following diagrams:

An interface includes the signatures of the operations. It specifies only a limited part of the behavior of a class. A class can implement one or more interfaces.

A class must implement all the operations in an interface to realize the interface. The following example shows an interface (Designated) realized by a class (Employee).

• Creating an Interface
  You can create an interface from a class, or from the Toolbox, Browser, or Model menu.
• Interface Properties
  To view or edit an interface's properties, double-click its diagram symbol or Browser or list entry. The property sheet tabs and fields listed here are those available by default, before any customization of the interface by you or an administrator.