Object oriented programming in java java oops concepts. There are 4 major principles that make an language object oriented. In the 1960s large machines called mainframes were created to manage large volumes of data numbers e ciently. Welcome to the first lesson of the objectoriented visual basic. Procedural programming is about writing procedures or functions that perform operations on the data, while objectoriented programming is about creating objects that contain both data and functions. A class contains definitions of variables, methods etcetera in most cases. Historically, a program has been viewed as a logical procedure that takes input data, processes it, and produces output data. The core of the pure objectoriented programming is to create an object, in code, that has certain properties and methods. There are three types of inheritance a multilevel inheritance b multiple inheritance c multiple multilevel inheritance. Functional programming seems to be gaining popularity recently. Download objectoriented programming lecture notes pdf from the following b. These features are generally referred to as the oops concepts.
However for practical purposes these concepts are explored and demonstrated using the java programming language. Net basic constructs course last time with the article about mathematical functions in vb. Included hundreds of useful examples provides complete guidance for the students to learn object oriented programming technique for. It is a userdefined data type, which holds its own data members and member functions, which can be accessed and used by creating an instance of that class. The basic unit of oop is a class, which encapsulates both the static attributes and dynamic behaviors within a box, and specifies the public interface for using these boxes. The newly learned insight is strenghtend with excercises and solutions 3. First of all, a class is a group of similar methods and variables. All books are in clear copy here, and all files are secure so dont worry about it. Features uses only c macros and functions, no language extensions required. Companies, names and data used in examples herein are fictitious unless otherwise noted. Lecture handout pdf lecture slides pdf recitation video.
Objectoriented programming oop languages are designed to overcome these problems. Abstraction means displaying only essential information and. Objectoriented programming oop consist of some important concepts namely encapsulation, polymorphism, inheritance and abstraction. Objectoriented programming oop is a programming paradigm based on the concept of objects, which may contain data, in the form of fields, often known as attributes.
From structured programming to objectoriented programming 1 2. Encapsulation, abstraction, polymorphism and inheritance. Course objectives when you complete this lesson, you will be able to. What are four basic principles of object oriented programming. The classic example of object oriented c is the standard file structure and its family of functions fopen, fclose, fread, fwrite, fprintf, etc. Lesson 1 introduction to objectoriented programming in. Tech student with free of cost and it can download easily and without registration need. Object oriented programming oop is a programming paradigm based on the concept of objects, which can contain data, in the form of fields often known as attributes or properties, and code, in the form of procedures often known as methods. When you create an instance of this class it is referred to as an object. Introduction to objectoriented programming with visual basic.
In this course, youll learn to program in an objectoriented way and will also develop an objectoriented way of thinking. Procedural programming is about writing procedures or methods that perform operations on the data, while objectoriented programming is about creating objects that contain both data and methods. An attribute can be described as a variable that is in the object, which is used to hold data pertaining to that object, while a behavior describes what an. Ooc implements classes, single and multiple inheritance, exception handling. Objectoriented programming oop is a programming paradigm organized around objects rather than actions, and data rather than logic. If you are new to object oriented approach for software development, an object in oop has some state and behavior. Objectoriented programming has several advantages over procedural. Objectoriented technology is both an evolution and a revolution as evolution it is the logical descendant of hll, procedures, libraries, structured programming, and abstract data types. Encapsulation and accessor levels explains protection of object states by encapsulation. The idea of this book was to focus on practical aspect of programming.
Object oriented programming oop is a programming structure where programs are organized around objects as opposed to action and logic. A program is a set of objects telling each other what to do by sending messages. You might already be writing some functional code without realizing it. The car has attributes, such as weight and color, and methods, such as drive and brake. However, did you know that you dont need to use an oop language in order to use oop style and get some of the benefits of object oriented programming. While the java programming language is used to highlight and demonstrate the application of fundamental object oriented principles and modelling techniques this book is not an introduction to java programming.
Each object has its own memory made up by other objects. These are encapsulation, data abstraction, polymorphism and inheritance. Oop includes classes, objects, overloading, encapsulation, data hiding, and inheritance. C programmers have been using something like object oriented programming for years. Introduction 2 pure objectoriented languages five rules source.
Object oriented programming is a programming style which is associated with the concepts like class, object, inheritance, encapsulation, abstraction, polymorphism. Objectoriented c ooc kit is for those who want to program in an objectoriented manner, but sticks on the good old c as well. In this article, we are giving you four main design principles of objectoriented programming oop. The author takes the extra time to lay out in detail how polymorphism, interfaces and inheritance among others can make your programming life a lot easier. Objectoriented programming oop is a programming language model organized around objects rather than actions and data rather than logic. Moreover, it is a new language of programming which also supports the object orient 1. In this tutorial, i will explain how we can bring some of the style of object oriented programming to c, a. As java being the most soughtafter skill, we will talk about object. In the above example, the data of any of the section like sales, finance or accounts are hidden from any other section. On this object, you use the defined methods and variables. Objectoriented programming has several advantages over procedural programming. And, with that limitation, many dismissed visual basic as.
Objectoriented programming objectoriented programming is a popular programming paradigm where concepts are grouped into reusable objects that carry their own attributes and behaviors. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose. A feature of objects is an object s procedures that can access and often modify the data fields. Understanding oop concepts can help make decisions about how you should design an application and what. Characteristics of an object oriented programming language class. Net is a revolutionary advance in programming technology that greatly simplifies application development and is a good match for the emerging paradigm of webbased services, as opposed to proprietary applications.