Decorator design pattern

Adapter class: This class is a wrapper class which implements the desired target interface and modifies the specific request available from the Adaptee class . Adaptee class: This is the class which is used by the Adapter class to reuse the existing functionality and modify them for desired use.

Adapter is a structural design pattern, which allows incompatible objects to collaborate . The Adapter acts as a wrapper between two objects. It catches calls for one object and transforms them to format and interface recognizable by the second object.

An Adapter pattern acts as a connector between two incompatible interfaces that otherwise cannot be connected directly . An Adapter wraps an existing class with a new interface so that it becomes compatible with the client’s interface.

In software engineering, the adapter pattern is a software design pattern (also known as wrapper, an alternative naming shared with the decorator pattern) that allows the interface of an existing class to be used as another interface .