Java OOPs Concepts

Java OOPs Concepts

In this page, we will learn about basics of OOPs. Object-Oriented Programming is a paradigm that provides many concepts such as inheritance, data binding, polymorphism etc.

OOPs

Object means a real word entity, for example, pen, seat, table and so on. Object-Oriented Programming is a strategy or paradigm to design a program utilizing classes and protests. It streamlines the product advancement and upkeep by giving a few Concepts:
  • Object
  • Class
  • Inheritance
  • Polymorphism
  • Abstraction
  • Encapsulation

Object

Any element that has state and behavior is known as a question. For instance: seat, pen, table, console, bicycle and so on. It can be physical and sensible.

Class

Accumulation of objects is called class. It is a logical entity.

Inheritance

When one object gets every one of the properties and practices of parent protest i.e. known as Inheritance. It gives code reusability. It is utilized to accomplish runtime polymorphism.

Polymorphism

When one errand is performed by various ways i.e. known as polymorphism. For instance: to persuade the client in an unexpected way, to draw something e.g. shape or rectangle and so on.
In Java, we use method overloading and method overriding to achieve polymorphism.
Another example can be to speak something e.g. cat speaks meaw, dog barks woof etc.

Abstraction

Hiding internal details and showing functionality is known as abstraction. For example phone call, we don’t know the internal processing.
In Java, we utilize conceptual class and interface to accomplish reflection

Encapsulation

Authoritative (or wrapping) code and information together into a single unit is known as encapsulation.
A java class is the case of encapsulation. Java bean is the completely exemplified class because every one of the information is private here.
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