4 days ago Learn concept of Object Oriented Programming(OOP) in java with example. Know about Abstraction, Encapsulation, Inheritance, Polymorphism. Java OOPs concepts - In this guide, we will discuss features of Object Oriented Programming System(OOPs) and how they are used in java with examples. Can We Downlode PDF file of this OOP Concept, Please forward the Link if possible. concepts or real world entities as objects with approved interfaces for use by you will walk through object-oriented programming by example; learning to use a .
|Language:||English, Spanish, Indonesian|
|Genre:||Health & Fitness|
|Distribution:||Free* [*Registration Required]|
An object in OOP has some state and behavior. In Java, the state is the set of values of an object's variables at any particular time and the behaviour of an object. Java OOPs Concepts, OOPs, (Object-Oriented Programming), procedure- oriented vs object-oriented, java oops concept with examples, oops features, object. complete source code for all examples in this tutorial series, plus exercises “ Object-oriented programming is an exceptionally bad idea which could only have .
While the methods may be performed with these cars are driving, reverse, braking etc.
An Object contains both the data and the function, which operates on the data. For example - chair, bike, marker, pen, table, car, etc.
It offers robust and natural mechanism for organizing and structure of any software. For example, in English, the verb run has a different meaning if you use it with a laptop , a foot race , and business. Here, we understand the meaning of run based on the other words used along with it. The same also applied to Polymorphism. It is a technique of creating a new data type that is suited for a specific application.
For example, while driving a car, you do not have to be concerned with its internal working. Here you just need to concern about parts like steering wheel, Gears, accelerator, etc. In this OOPS concept, the variables of a class are always hidden from other classes. It can only be accessed using the methods of their current class. For example - in school, a student cannot exist without a class. It defines the diversity between objects. In this OOP concept, all object have their separate lifecycle, and there is no owner.
For example, many students can associate with one teacher while one student can also associate with multiple teachers. It is also called "death" relationship.
Child objects do not have their lifecycle so when parent object deletes all child object will also delete automatically. Any house can have several rooms. 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: Association is the OOPS concept to define the relationship between objects.
Association defines the multiplicity between objects. For example Teacher and Student objects. There is one to many relationship between a teacher and students.
Similarly a student can have one to many relationship with teacher objects. However both student and teacher objects are independent of each other. Aggregation is a special type of association.
In aggregation, objects have their own life cycle but there is an ownership. Composition is a special case of aggregation. Composition is a more restrictive form of aggregation. For example, House has-a Room.
Read more about it at Composition in Java. Composition is said to be better than inheritance, read more at Composition vs Inheritance. If you have come this far, it means that you liked what you are reading.
Why not reach little more and connect with me directly on Facebook or Twitter. I would love to hear your thoughts and opinions on my articles directly. Recently I started creating video tutorials too, so do check out my videos on YouTube. Thanks for the simple and wonderful explanations. Can you please add examples for association, aggregation and compositions as well? That would be very helpful.
Nice sharing. I only know one thing about your question. At the software engineering industry, according to modern software development concepts, all developed software should be highly cohesive and loosely coupled. Cohesion refers to what the class or module can do.
Low cohesion would mean that the class does a great variety of actions — it is broad, unfocused on what it should do. High cohesion means that the class is focused on what it should be doing, i. For low coupled classes, changing something major in one class should not affect the other.
High coupling would make it difficult to change and maintain your code; since classes are closely knit together, making a change could require an entire system revamp.
Nice ariticle,realy its cativative. Each sentences are simple and. I used this article for my assignnent purposes for the reference and realy it is awosome. Really i am happy with this article now i cleared oops Concept.
I ll special thank to this article owner. You have shared each and every point of OOPs concept very well and precise, its easy to understand every term you have explained here.
Fine and clearly explained list of OOPs concept in java. Thanks a lot for sharing! After read all of your articles about design pattern and OOP, i can say that you know how to choose the right word to explain thing.
Very clear, precise and easy to understand and follow. Your email address will not be published. Leave this field empty. Exclusive Subscribers Only Posts and Updates Interview Tips, Latest Updates and much more You are here: You can go through more Java example programs from our GitHub Repository.