Creating an interface

UML Modeling Techniques > Class modeling > Creating class modeling items > Creating an interface

You can create an Interface through a Class Diagram, Composite Structure Diagram or a Modeler pane.

To create an interface through a class diagram:

1. On the Class Diagram toolbar, click the

Interface button, and then click on the diagram in free space or within a Package.

If you click within a Package on the diagram, the Interface is created as a child item of that Package.

2. Type the name of the Interface, and then press the Enter key.

To create a provided interface on a class diagram or composite structure diagram:

1. On the Class Diagram or Structure Diagram toolbar, click the

Provided Interface button.

2. Click the Class, Data Type, Signal, Part or Port on which the Interface is dependent.

3. Double-click in free space.

4. Type the name of the provided Interface, and then press the Enter key.

Modeler adds the provided Interface as a lollipop, linked to the Class, Data Type, Signal, Part or Port through an interface realization Dependency.

You can click in free space to create the provided Interface, and then click the Class, Data Type, Signal, Part or Port on which the provided Interface is dependent.

To create a required interface on a class diagram or composite structure diagram:

1. On the Class Diagram or Structure Diagram toolbar, click the

Required Interface button.

2. Click the Class, Data Type, Signal, Part or Port on which the Interface is dependent.

3. Double-click in free space.

4. Type the name of the required Interface, and the press the Enter key.

Modeler adds the required Interface as a cup, linked to the Class, Data Type, Signal, Part or Port through a uses Dependency.

You can click in free space to create the required Interface, and then click the Class, Data Type, Signal, Part or Port on which the required Interface is dependent.

To create an interface through a Modeler pane:

1. In a Modeler pane, locate the item that is to own the Interface, that is, a Package, Class, Interface or the Model.

2. Right-click the owning item.

3. Point to New, and then click Interface.

Point to New, point to UML, point to Structure, and then click Interface.

4. Type the name of the Interface, and then press the Enter key.