Facebook Developer Interview Questions and Answers

Oops concept in Java

• Object-oriented programming paradigm

• Encapsulation, Inheritance, Polymorphism, Abstraction

• Classes, Objects, Methods, and Properties

• Code reusability and modularity

• Example: Creating a class 'Car' with properties like 'color' and 'speed', and methods like 'start' and 'stop'

A class in Java is a blueprint or template for creating objects that define the properties and behaviors of those objects.

• A class is a fundamental building block in Java programming.

• It encapsulates data and methods that operate on that data.

• Objects are instances of classes.

• Classes can be inherited to create new classes with additional or modified functionality.

• Example: class Car { String color; void start() { ... } }