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Design the Factory pattern and What is its application ?

Design the Factory pattern and What is its application ?..

Answer / fact pandit

I think the question is on Factory Method Pattern. So I
will go in that direction. However there is another pattern
called the Abstract Factory Pattern which is realted to
Factory Method Pattern.

If we have to hide the "Creation" of an object and its
Concrete type to a client, then the tendency is to
use "Factory Method Pattern".

Normally a factory method is a method that is part of
an "Abstract Factory". Client calls the factory method on
an abstract factory which is a concrete object of an
interface whose type may or may not be known to the client,
to get a concrete object of the interface for product whose
concrete type may or may not be useful to the client.

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