Chapter 3 Building Structural Diagrams

Require Links (OOM)

Require links connect classifiers and interfaces. A require link can connect a class, a component, or a port on the outside of one of these classifiers to an interface.

A require link can be created in the following diagrams:

• Class Diagram
• Composite Structure Diagram
• Component Diagram

Require links in a class diagram

In the example below, require links connect the class TitleImpl with the interfaces java.math.stat and java.sql.connection. Note how the require link can proceed from a port or directly from the class

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