Architecting and designing > UML 2.5 > Model Elements > Classifiers > Interface
  
Interface
A Port represents an interaction point through which a Classifier communicates with its environment. An Interface associated with a Port specifies the nature of the interactions that can occur over it.
The provided Interfaces of a Port characterize requests to the Classifier that its environment can make through this Port. The owning Classifier must offer the Features owned by the provided Interfaces.
Specifying ‘Provided’ and ‘Required’ Ports for a Classifier
You specify ‘Provided’ and ‘Required’ Ports for a Classifier through its interface(s).
For instructions on how to specify that a port provides an interface, see Port Provides (Realizes) Interface.
For instructions on how to specify that a port uses an interface, see Port Requires (Uses) Interface.
See also
Activity
Actor
Association
DataType
Enumeration
Extension
FunctionBehavior
Information Item
Interaction
Opaque Behavior
Primitive Type
Signal
State Machine
Stereotype
Use Case
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