where u use Abstraction and Interface in real time

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where u use Abstraction and Interface in real time..

Answer / praveen

If a user want to interact with my application he need an
interface. With the interface the user can access the
specific methods of a class that implemented the interface.
For example user want to call a method. He already know the
specific class implemented that interface, then he can call
the method through reference object.

Abstract class is used whenever a user restricted to
inheritance but not taking instance of a class or if any
methods are there that should be implement by the user.

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where u use Abstraction and Interface in real time..

Answer / narasimha

Abstraction is used in framework and interfaces are used in
specification

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where u use Abstraction and Interface in real time..

Answer / teja

When ever there is need of having same common features
among the subclasses of of super class we have to go for
AbstractClass,
When ever there is no common features for subclasses of
super class we have to go for interface

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