Why Java is NOT a 100% Object-Oriented Language? Interview Explained

Published: 30 July 2026
on channel: Engineer To Engineer
19
4

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Many developers say Java is an Object-Oriented Programming language. But then why do interviewers often ask:

"Is Java a 100% Object-Oriented Language?"

In this video, we answer this classic software engineering interview question by exploring the features that make Java object-oriented and the reasons why it is not considered a pure Object-Oriented Programming language.

You'll also learn why this question is frequently asked in interviews and how to answer it confidently.

In this video, you'll learn:
What makes a language object-oriented
Why primitive data types break pure OOP
Why static members are not tied to objects
How Java balances performance with object-oriented principles
The interview-ready answer to this common question

Pause the video before the explanation and think about your own answer. Then compare it with the discussion to strengthen your understanding.

This question is commonly discussed in Java interviews at companies such as Google, Amazon, Microsoft, LinkedIn, Adobe, Oracle, Salesforce, Walmart Global Tech, Atlassian, and many other product companies.

If you're preparing for Java or software engineering interviews, subscribe for more videos on:

Java
Object-Oriented Programming
Low-Level Design (LLD)
High-Level Design (HLD)
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Machine Coding
System Design

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