• Object is a self contained entity that
consist of both data and procedures to manipulate the data.
“Class defines all the common
properties of the different objects that belong to it.”
Polymorphism :
• The ability to process object
differently depending on their data type or class.
Abstraction:Refers to providing only essential
information to the outside world and hiding their background details.• The process of picking out common
features of objects and procedures.
Encapsulation:• Placing data and functions that works
on the data in the same place.
• This feature found in oop not in
procedural language.
• The process of combining elements to
create a new entity.
Inheritance:
(Reusability of code)
• A feature that represents the
relationship between different classes.
•
The existing class
is called base class and the new class is called drived class.
Function overloading:• Is a feature that allows a class to
have two or more methods/Functions having the same name but different
parameters.
Function over-riding:• Is a feature that allows a subclass or
child class to provide a specific implementation of a method that
already provided by its parent class.
Friend function:• A friend function of a class is defined
outside that class scope but it has the right to access all private or
protected members of class.
Constructor:A type of member function that is automatically
executed when an object of that class is created, is known as constructor.
No return type.
Same name that of class name.
Abstract class:• Have abstract and non abstract methods.
• Doesnot support multiple function.
• Have final, non-final, static and non
static variables.
• Provide implementation of interface.
Interface class:• Have only abstract methods.
• Support multiple Inheritance.
• Have only final and static variables.
• Can`t Provide implementation of
abstract class.
Access specifier :• The command that determine wether a
member of a class can be accessed from outside the class or not, called access
specifier.
• Private specifier : The member of a class that can be
accessed only from with in the class.
• Public specifier :
The member of class that can be accessed from inside and from outside of
the class.
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