OOP: Introduction. 3. The Object Concept. • An object is an encapsulation of data. • An object has. ▫ identity (a unique reference),. ▫ state, also called. 5 days ago Learn concept of Object Oriented Programming(OOP) in java with example. Encapsulation, Inheritance, Polymorphism in this tutorial. Software crisis. Software Evaluation. POP (Procedure Oriented Programming). OOP (Object Oriented Programming). Basic concepts of OOP.
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Basic Concepts in Object Oriented Programming. Raul Ramos / IT User .. Any OO Programming Language tutorial usually includes a OO overview: Java, C++. In this page, we will learn about the basics of OOPs. Object-Oriented Programming is a paradigm that provides many concepts such as inheritance, data binding. The core of the pure object-oriented programming is to create an object, in code, This is a very important concept of object-oriented programming since this.
Single Inheritance: Single Inheritance: In single inheritance, one class inherits the properties of another. It enables a derived class to inherit the properties and behavior from a single parent class.
Object Oriented Programming – Java OOPs Concepts With Examples
This will in turn enable code reusability as well as add new features to the existing code. Here, Class A is your parent class and Class B is your child class which inherits the properties and behavior of the parent class.
Multilevel Inheritance: When a class is derived from a class which is also derived from another class, i.
If we talk about the flowchart, class B inherits the properties and behavior of class A and class C inherits the properties of class B. Here A is the parent class for B and class B is the parent class for C.
So in this case class C implicitly inherits the properties and methods of class A along with Class B. Hierarchical Inheritance: When a class has more than one child classes sub classes or in other words, more than one child classes have the same parent class, then such kind of inheritance is known as hierarchical. If we talk about the flowchart, Class B and C are the child classes which are inheriting from the parent class i.
Since multiple inheritance is not supported in Java as it leads to ambiguity, so this type of inheritance can only be achieved through the use of the interfaces.
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Now we have learned about inheritance and their different types. Object Oriented Programming : Encapsulation Encapsulation is a mechanism where you bind your data and code together as a single unit.
It also means to hide your data in order to make it safe from any modification.
What does this mean? The best way to understand encapsulation is to look at the example of a medical capsule, where the drug is always safe inside the capsule. Similarly, through encapsulation the methods and variables of a class are well hidden and safe.
We can achieve encapsulation in Java by: Declaring the variables of a class as private. Providing public setter and getter methods to modify and view the variables values. We have then created a getter and setter methods through which we can get and set the name of an employee.
Through these methods, any class which wishes to access the name variable has to do it using these getter and setter methods.
Object Oriented Programming : Abstraction Abstraction refers to the quality of dealing with ideas rather than events. It basically deals with hiding the details and showing the essential things to the user. If you look at the image here, whenever we get a call, we get an option to either pick it up or just reject it.
C++ Object Oriented
But in reality, there is a lot of code that runs in the background. Therefore, abstraction helps to reduce complexity. Now what does the abstract keyword mean? If a class is declared abstract, it cannot be instantiated, which means you cannot create an object of an abstract class.
Also, an abstract class can contain abstract as well as concrete methods. In an interface, each method is public and abstract but it does not contain any constructor.
So an interface basically is a group of related methods with empty bodies. But their working is going to be different. So, if you delete the house room will also be deleted.
Advantages of OOPS: OOP offers easy to understand and a clear modular structure for programs. Objects created for Object-Oriented Programs can be reused in other programs. Thus it saves significant development cost. Large programs are difficult to write, but if the development and designing team follow OOPS concept then they can better design with minimum flaws. It also enhances program modularity because every object exists independently. Programming languages can be classified into 3 primary types Unstructured Programming Languages: The most primitive of all programming languages having sequentially flow of control.
Code is repeated through out the program Structured Programming Languages: Has non-sequentially flow of control. Use of functions allows for re-use of code. Object Oriented Programming: Click here if the video is not accessible.
Let's understand these 3 types with an example. Suppose you want to create a Banking Software with functions like Deposit Withdraw Show Balance Unstructured Programming Languages The earliest of all programming language were unstructured programming language. Structured Programming With the arrival of Structured programming repeated lines on the code were put into structures such as functions or methods.
Whenever needed, a simple call to the function is made. Object-Oriented Programming In our program, we are dealing with data or performing specific operations on the data.
In fact, having data and performing certain operation on that data is very basic characteristic in any software program.
OOPS Concepts in Java with Examples
In Fibonacci series, next number is the sum of previous two numbers. Insertion sort is a simple sorting algorithm suited for small data sets. During each iteration, SAP Tutorials.
Net C CodeIgniter.It simplifies the software development and maintenance by providing some concepts: It arises when classes are aware of each other. Static polymorphism compile time.
What is an Object? The only necessary thing is the type of message accepted and the type of response returned by the objects. Whenever needed, a simple call to the function is made. So, if you delete the house room will also be deleted.
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