Object-Oriented Programming (OOPs) Concepts

This document explains how to use Object-Oriented Programming (OOP) concepts to build real-time software applications, focusing on an Online Banking System.

Object-Oriented Programming (OOP) is a programming paradigm based on the concept of objects, which can contain data and code to manipulate that data. It promotes concepts like encapsulation, inheritance, and polymorphism.

In OOP, a class is a blueprint for creating objects (instances), providing initial values for state (member variables) and implementations of behavior (member functions or methods).

Constructors and destructors are special methods in OOP that handle object initialization and cleanup. Constructors set up the initial state, while destructors handle object destruction and resource management.

Inheritance is a mechanism in OOP that allows one class to inherit the properties and behaviors of another class, promoting code reusability.

The four main pillars of OOP are abstraction, encapsulation, inheritance, and polymorphism. These principles provide a foundation for creating robust and reusable code in object-oriented systems.

An interface defines a contract for behavior, whereas an abstract class provides partial implementation. Both are used to achieve abstraction but differ in their design and use cases.

OOP concepts are widely used in real-world applications. This section showcases practical examples of OOP concepts are applied in various industries.

Polymorphism is a core concept in object-oriented programming that allows objects of different classes to be treated as instances of the same class through a shared interface

Abstraction in Java is the process of hiding unnecessary implementation details from the user, focusing on exposing only the essential functionalities