Abstraction in Java with Bank ATM Example

In the previous post we learned what is polymorphism in Java. In this post, we are going to learn about another important concept of OOPs in Java which is Abstraction.

Abstraction in Java simply means hiding certain details from the user and showing only essential information to the user.

• Here is a real-life example of abstraction: Through the ATM machine, banks only show essential information to people, such as withdrawing money and checking account balances, by hiding the internal implementation or mechanism.
• Another real-life example of abstraction is