Java is a pure
object oriented programming language. It is based on the concept of object.
Java implements all the features of object oriented programming like
- Abstraction
- Encapsulation
- Polymorphism
- Inheritance
- Class
- Objects
- Methods
Object oriented
programming provide a great flexibility, reusability, modularity and security
to an application.
Data hiding is a
very powerful feature. It provides security to various sensitive methods and
variables.
Abstraction provides
a way to hide the less essential properties so as to reduce complexity and
increase efficiency.
Encapsulation is an
information hiding and securing mechanism. It helps in restricting the access
of data from the outside entities it means only the methods in a class can
access its member variables. Encapsulation reduces the system complexity and
increases robustness.
Polymorphism is a
way to have more than one form of a method. In polymorphism, we use the method
overloading and method overriding techniques.
Inheritance is used
to reduce the code and reuse the already available code. Here we extend a base
class to a derived class. The derived class then inherits the properties of its
base class.
Class is a very
essential entity in java. Every program in java has a class. Class is like a
blueprint of an object. A class contains member variables and methods.
Object is soul of
object oriented programming. An object is an instance of its class. Object is
used to access the methods and variables in a class.
Methods are the
operations that an object can perform. Methods define the behavior of an
object.
All of the above
object oriented programming concepts are widely used when we write java codes.
OOPS concepts are one of the reason for the power and success of java
programming language.
