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Difference between Abstraction and Encapsulation

20 Oct 2017 1 comments

Difference between Abstraction and Encapsulation :-



AbstractionEncapsulation
Abstraction solves the problem in the design level.Encapsulation solves the problem in the implementation level.
Abstraction is used for hiding the unwanted data and giving relevant data.Encapsulation means hiding the code and data into a single unit to protect the data from outside world.
Abstraction lets you focus on what the object does instead of how it does it.Encapsulation means hiding the internal details or mechanics of how an object does something.
Abstraction- Outer layout, used in terms of design. For Example:- Outer Look of a Mobile Phone, like it has a display screen and keypad buttons to dial a number.Encapsulation- Inner layout, used in terms of implementation. For Example:- Inner Implementation detail of a Mobile Phone, how keypad button and Display Screen are connect with each other using circuits.



The easier way to understand Abstraction and encapsulation is as follows:-

Real World Example:- 

Take an example of Mobile Phone:- 

You have a Mobile Phone, you can dial a number using keypad buttons. Even you don't know how these are working internally. This is called Abstraction. You have the only information that is needed to dial a number. But not its internal working of mobile.

But how the Mobile Phone internally working?, how keypad buttons are connected with internal circuit? is called Encapsulation.

Summary:

"Encapsulation is accomplished by using Class. - Keeping data and methods that accesses that data into a single unit"
"Abstraction is accomplished by using Interface. - Just giving the abstract information about what it can do without specifying the back ground details"
"Information/Data hiding is accomplished by using Modifiers - By keeping the instance variables private or protected."

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