Factory
Definition:
Define an interface for creating an object,
but let the classes that implement the interface decide which
class to instantiate.
Real Life Example,
Imagine you are constructing a house and you
approach a carpenter for a door. You give the measurement for the
door and your requirements, and he will construct a door for you. In
this case, the carpenter is a factory of doors. Your specifications
are inputs for the factory, and the door is the output or product
from the factory.
Abstract Factory
Definition:
Provide an interface for creating families
of related or dependent objects without specifying their concrete
classes.
Real Life Example,
Now, consider the same example of the door. You
can go to a carpenter, or you can go to a plastic door shop or a PVC
shop. All of them are door factories. Based on the situation, you
decide what kind of factory you need to approach. This is like an
Abstract Factory.
