object interface

Objectsreflect the reality from the application environment together with all interrelationships. They are model-like replicas of structures that describe a software problem and that interact on the way to the result. Objects can be placed in relation to each other, with the interaction between objects following a functional plan.

Objects can be related to other objects by means of known methods. These methods form the object interfaces. As an example, consider an electrical device that is switched on by pressing a button. Such a switch represents an interface between the operator and the interior of the device.

Object Interfaces are declared like classes, but they cannot be instantiated and have no definition methods of their own. Rather, they are the classes that support an interface and its implemented methods.