Abstarction :

Abstraction is process of hiding the implementation details and showing only the functionality.
·Abstraction in java is achieved by using interface and abstract class. Interface give 100% abstraction and abstract class give 0-100% abstraction.

Real Time Example :

• Take the same example of news channel. The article they write on newspaper is abstracted as the heading. Hence the simple heading of the whole article is abstracted.
• All are performing operations on the ATM machine like cash withdrawal, money transfer, retrieve mini-statement…etc. but we can't know internal details about ATM.