Is Java Considered as Pure Object Oriented Programming Language?


Heather Bennett

Is Java Considered as Pure Object Oriented Programming Language?

In the world of programming languages, there is an ongoing debate about whether Java can be considered a pure object-oriented programming language. To understand this, let’s first define what it means for a language to be pure object-oriented.

What is Object-Oriented Programming?

Object-oriented programming (OOP) is a programming paradigm that organizes data and behaviors into objects, which are instances of classes. In OOP, everything revolves around objects and their interactions with each other.

OOP emphasizes the concepts of encapsulation, inheritance, polymorphism, and abstraction. Encapsulation refers to the bundling of related data and functions into objects.

Inheritance allows classes to inherit properties and methods from other classes. Polymorphism enables objects of different classes to be treated as if they belong to the same class. Abstraction focuses on hiding unnecessary details and providing only essential information to the user.

Java’s Object-Oriented Features

Java was designed with OOP principles in mind. It supports all major features of an object-oriented language:

  • Classes: In Java, you define classes to create objects. Classes encapsulate data and methods related to those objects.
  • Inheritance: Java supports single inheritance, where a class can inherit properties and methods from a single superclass.
  • Polymorphism: Java allows you to write code that can work with objects of different types through interfaces and abstract classes.
  • Abstraction: You can use abstract classes and interfaces in Java to achieve abstraction by hiding implementation details.

The Notion of “Pure” Object-Oriented

Some argue that a language can only be considered a pure object-oriented language if every entity in the language is an object. This means that even primitive types, such as integers and booleans, should be objects.

In Java, primitive types are not objects. They are implemented as non-object values for performance reasons. However, Java provides wrapper classes (e.g., Integer, Boolean) that wrap these primitive types and allow them to be treated as objects when needed.


While Java may not meet the strict definition of being a pure object-oriented programming language due to its inclusion of non-object primitive types, it is undoubtedly a strongly object-oriented language. It incorporates essential features of OOP such as classes, inheritance, polymorphism, and abstraction.

Ultimately, whether or not Java is considered pure object-oriented depends on the interpretation and definition of what constitutes a pure object-oriented language. Nonetheless, Java’s robust support for OOP concepts has made it one of the most popular programming languages in the world.

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