Chapter 2 Building an Object-Oriented Model
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The list of interfaces appears.
2 Click the interface that you want to modify.
An arrow appears at the beginning of the line.
3 Modify any of the properties of the interface directly in the list.
4 Click OK.
Adding inner classes to an interface
An inner class is a class definition that is defined within another (outer) class
definition. Inner classes are commonly used in Java. They help you to
improve the overall visibility of your model by allowing you to group
together classes that logically belong together.
You can add inner classes to a class or an interface.
$ For more information on inner classes, see the section Inner classes.
Adding objects to an interface
You can add an object to an interface, that already exists in the model, but
which belongs to another object.