Procedural programming is based on the unreal world. Object-oriented programming is based on the real world. Procedural programming is used to design medium-sized programs. Object-oriented programming is used to design large, complex programs. Procedural programming uses the concept of procedure abstraction. Introduction to object-oriented programming. At the heart of Java's design philosophy is object-oriented programming. OOP is a paradigm that uses "object" entities that combine data and. ~ Java Object Oriented Programming Cheat Sheet. Java is an object-oriented language because it is modeled and organized around objects rather than actions, and data rather than logic. It simplifies software development and maintenance by providing some very interesting features. Object oriented programming in Java aims to: There are some basic concepts of object oriented programming which include classes, objects, association, composition, aggregation and the four main pillars of OOP which are as follows: Inheritance: It provides a feature called reusability of code. In inheritance we reuse code. There is a base class that sounds like a parent, the database combines object-oriented programming concepts with relational database principles. Objects are the basic building block and an instance of a class, where the type is built-in or user-defined. Classes provide a schema or model for objects, defining their behavior. Methods determine the behavior of a class. A style of OOP object-oriented programming in which inheritance occurs through the definition of classes of objects, rather than through objects alone. The most popular model of OOP is class-based. But as I said, JavaScript is not a class-based language: it's a prototype-based language. According to Mozilla documentation: