Common Java Abstraction Interview Questions and Answers

Alexander Obregon
8 min readMar 3, 2024
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Introduction

Abstraction in Java is a fundamental concept in the world of Object-Oriented Programming (OOP). It is a mechanism to hide the complex implementation details and show only the necessary features of an object to the user. This article is tailored for individuals preparing for Java interviews, with a focus on Java Abstraction. It assumes a basic understanding of Java Abstraction and dives straight into common interview questions and answers, with code examples for better understanding.

Understanding Java Abstraction

Abstraction allows developers to focus on what an object does instead of how it does it, by hiding the implementation details and showing only the necessary features of an object. This section dives deeper into the concept of abstraction in Java, exploring its implementation through abstract classes and interfaces, constructors in abstract classes, and their significance in Java programming.

What is Abstraction in Java, and How is it Achieved?

Abstraction in Java is a process of hiding the implementation details from the user, only showing the functionality that the user needs. In Java, abstraction is realized through abstract classes and interfaces.

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Alexander Obregon

Software Engineer, fervent coder & writer. Devoted to learning & assisting others. Connect on LinkedIn: https://www.linkedin.com/in/alexander-obregon-97849b229/