Abstraction in Java is the process of hiding internal implementation details and showing only essential functionality to the user. It focuses on what an object does rather than how it does it.
Data abstraction is the process of hiding certain details and showing only essential information to the user. Abstraction can be achieved with either abstract classes or interfaces (which you will learn more about in the next chapter).
In Java, abstraction isn’t just a concept—it’s a practical approach that helps in building scalable, maintainable, and modular applications. It allows you to define standardized interfaces, write reusable code, and develop systems that are easier to debug, extend, and collaborate on.
Abstraction is a fundamental concept in Java's object-oriented programming. It enables you to hide complex implementation details and display only the most essential features of an object.
Learn about JavaAbstraction, a key OOP concept that simplifies complex systems, enhances code reusability, and boosts security through abstract classes and interfaces with practical examples.
WhatisAbstractioninJava? As told above, abstraction is one of the four pillars of OOP, which is used to hide complex details while displaying the ones that are easier to understand.
Abstract classes use the abstract keyword. Its main aim is to provide a general design that all its subclasses can use, leaving the specifics and implementations to them. A class can have abstract and concrete methods. As a blueprint, it defines some methods and leaves others to subclasses.
In Java, abstraction is achieved using abstract classes and interfaces. These constructs allow you to define methods without implementing them, forcing subclasses or implementing classes to provide the actual implementation.
This tutorial explains what is Abstraction in Java along with code examples. You will also learn what is an abstract class & why is it used.