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Java Interview Question and Answer Is Java Pure Object Oriented language or not

2,630 views · Published 5 November 2013 · 2:52 · Indexed 1 November 2026

Channel: Interview DOT · 2013 · Science & Technology

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Is Java Pure Object Oriented Programming Language ? Explain ? Java Interview Question and Answer ?

Java is a OOP language and it is not a pure Object Based Programming Language. Many languages are Object Oriented. There are seven qualities to be satisfied for a programming language to be pure Object Oriented. 

They are:

Encapsulation/Data Hiding
Inheritance
Polymorphism
Abstraction
All predefined types are objects
All operations are performed by sending messages to objects
All user defined types are objects.

Java is not because it supports Primitive datatype such as int, byte, long... etc, to be used, which are not objects. Contrast with a pure OOP language like Smalltalk, where there are no primitive types, and boolean, int and methods are all objects.
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