New data and methods can be easily added whenever needs.ĩ. Data cannot move freely out of the object.Ĩ. Hence, it is safe from accidental modification.ħ. Data is hidden in the OOP and cannot be accessed by external methods. An object is a group of data and methods.Ħ. Methods that operate on Data of an object are closely bound together in the data structure.ĥ. Objects communicate with each other through functions (methods).Ĥ. Programs are divided into the number of entities known as objects.ģ. Higher priority is focused on Data rather than functions.Ģ. Some of the striking features of object-oriented programming system (OOPs model/design) are as follows:ġ. In this way, data is hidden in the object-oriented programming language. Thus, data is protected and safe from modification by external functions. An external function cannot access the data of an object but the functions of one object can access the function of other objects. The data of an object can be accessed and modified only by the function of that object. In the OOPs concept, data cannot move freely around the system. The data of an object is tied more closely with a function that operates on it. The combination of data and functions (methods) in OOP makes an object that is shown in the below figure. In an application, objects communicate with each other, share data among them, and solve problems. It divides programs into the number of entities called objects that contain data (variables) and functions/tasks (known as methods in java). Object oriented programming is a new approach to overcome the drawbacks of a procedural oriented approach. Object-Oriented Programming Paradigm (Model/Design) Java is a pure object-oriented language. Smalltalk is the first truly object-oriented programming language. Languages that implements OOPs features are Smalltalk, C++, Java, PHP, Python, and C#.Ĭ++ is a procedural language with object-oriented extension. In these languages, a programmer uses procedures or functions to perform a task.Ģ. For example, languages like C, Pascal, Fortran, etc does not implement OOPs features because these are Procedure oriented programming. When we write a program using these features, it is called Object-Oriented Programming System (OOPs). The main goal of the OOPs concept in java programming is that everything you want to do, do through objects.ġ. It comes with four main features like encapsulation, abstraction, inheritance, and polymorphism. That’s why this new approach is called object-oriented approach in which we write programs using classes and objects. Java OOP concept uses variables and methods as procedural programs do, but it focuses on the objects that contain variables and methods. It contains data in the form of fields or variables (often known as attributes or properties in java) and functionality code in the form of methods (often known as behavior in java). Whereas, object-oriented programming means writing code with objects. Procedural programming means writing code without objects. It is an extension of procedural programming. It is the most popular programming paradigm and widely used in the software industry today. Object-oriented programming (OOP) in Java is a programming methodology or paradigm (model) to design a computer program using classes and objects. So, let’s understand first what is object-oriented programming (OOP) in Java. We will also know about its striking features, advantages, and applications. In this tutorial, we will understand about a very important topic “ OOPs concepts in Java” with realtime example.
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