Architecting and designing : UML 2.5 : Relationships : Component Requires (Uses) Interface
  
Component Requires (Uses) Interface
The Component Requires (Uses) Interface relationship is used to specify that a Component requires an Interface – in the example below, that Motion requires the ImageObserver interface.
This graphic is described in the surrounding text.
See also
Association
Dependency
Realization
Collaboration Property to Part
Component Provides (Realizes) Interface
Port Provides (Realizes) Interface
Port Requires (Uses) Interface
Comment to AnnotatedElement
Constraint to ConstrainedElement
Connector
ElementGroup to Element
Instance Specification Relationships
Generalization
Package Containment
Package Import
Substitution
Go up to
Relationships