What do Java OOP Concepts Mean?

A programming paradigm known as object-oriented programming (OOP) emphasises the use of objects to represent and manage data. In OOP, objects contain data and are identified by their properties (properties) and behaviours (methods). OOP offers numerous essential ideas that aid programmers in creating modular, reusable, and maintainable code. If you want to know What do Java OOP Concepts Mean? Join Java Training In Chennai at FITA Academy for the best coaching from industrial experts.

Java defines OOP concepts as follows


Using straightforward objects to convey complexity. We all know how to turn on the television, but understanding how it functions is not necessary to enjoy it. Abstraction in Java refers to the way less complex underlying data and code are represented by simpler entities like objects, classes, and variables. This is crucial since it lets you avoid performing the same task more than once.


When fields are kept private within a class, access to those fields is then made available through public methods. Within a class, encapsulation acts as a security barrier to protect data and code. We can reuse objects like code snippets or variables without giving the entire system free access to the data.


The ability to create new classes that share some of the characteristics of existing classes is a unique feature of Java’s object-oriented programming language. You can expand on prior work without starting from scratch by using inheritance.


Enables Java programmers to use the same word in several contexts to indicate different things. Overloading methods is one type of polymorphism. The symbol alone then implies several meanings. Method override is another type. Only then do the values of the provided variables signify various interpretations. 

How OOP Concepts in Java Work

The way Java’s OOP concepts function is by allowing programmers to construct secure components that can be reused in various contexts. Get the best Java Training with certified Trainers at FITA Academy. Here, we offer the training with the recently updated syllabus in Java Online Training.

How Abstraction Works

The use of abstraction enables programmers to build practical, reusable tools. By disassembling large systems into smaller, easier to handle components, it aids programmers in creating complex systems. A programmer can produce various kinds of objects, such as variables, functions, and data structures. Several types of objects can be made by programmers as a means of defining objects.

An address could be an example of a class of a variable. Each address object can be required to contain a name, street, city, and zip code, according to the class. Addresses for customers, suppliers, or employees may all be considered objects in this situation. 

A means of hiding a class’s or method’s implementation details from the outside world and providing a straightforward interface for engaging with clients are both provided by abstraction. The two basic methods for achieving abstraction in Java are abstraction classes and interfaces.

Abstract Classes

A class that is abstract can only be extended through subclassing and cannot be instantiated. Both abstract and non-abstract methods can be found in abstract classes. Any extended abstract class subclass must implement abstract methods since they lack a body. Non-abstract methods can be called directly through a subclass and contain a body.


An interface consists of a number of methods. It can be used to specify a group of actions that a class ought to take. Every function specified in an interface must be implemented by any class that implements it, and a class may implement many interfaces. Join the Java Training In Coimbatore and get worthy training with placement assistance.