This Paradigm provides many concepts in order to do this, They are inheritance, data binding, Polymorphism etc.
Smalltalk is the first truly object oriented programming language.
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- Benefits of OOPS
- Single Inheritance
- Multiple Inhertiance
- Multilevel Inhertiance
- Hybrid Inhertiance
Benefits of OOP Concepts
OOP Concepts has several benefits for the developer as well as the users. This object oriented programming concept contributes in resolving many problems associated with development.
- Can Eliminate Redundant Code
- Existing class can be used
- Data hiding helps to build secure program
- Easier to develop larger programs
- Ability to stimulate real world program
- Can be upgradable from small program to large programs
OOPS Concepts in Java
- Working with Super Classes & Sub Classes
- Super Keyword
- Abstract Classes
- String Methods
- Exception Handling
Read more to get the detailed understanding of the important concepts such as Inheritance, Polymorphism, Encapsulation.
Inheritance is defined as, an object which has all the properties and nature of another object. It is an important feature in OOP concepts.
- Can use already written class
- Extend the existing class
- Code Reusability
Different Types of Inheritance
- Single Inheritance
- Multiple Inheritance
- Multilevel Inheritance
An easy understandable key feature of OOP in Java, The architectural diagram below describes you about Single Inheritance. Class B which got inherited from Class A. The dervied class B has all the features and characters as same as Class A which is its parent class.
Multiple Inheritance which is slightly different from the previous one, It consists of two base classes from which a new class is derived. This concept is not mostly used in software projects, also the new programming languages such as C++, Java does not support Multiple Inheritance.
In this OOP Concept a new class is derived from already exisitng class which got derived from the base class, Means Class C got derived from Class B which is inherited from Class A. Class B is the parent class for Class C and child class for Class A.
One of the easy concepts in Java is Polymorphism. Poly means many, Morphos means forms, thus a single task is performed by different ways it is known as Polymorphism. Here in Java Polymorphism is achieved by using method overloading and overriding.
It is clear that Methods having the same name works differently in different context. It is implemented by two different ways, They are
- Static Polymorphism
- Dynamic Polymorphism
Binding the data and code in a single unit is called as Encapsulation. It also provides security to keep them safe from changes.
- Variables must be declared as Private
- Setter and Getter methods to modify and view the variables
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