Object-Oriented Programming: A Blueprint for Real-World Objects and Interactions, Slides of Programming Methodologies

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OBJECT ORIENTED

PROGRAMMING

PREPARED IN GROUP

ARJUN , PRATIK, SANDEEP, BIKASH AND RAMESH

INTRODUCTION

 (^) Object oriented programming is a programming language model organized around objects rather than “actions” and data rather than logic,which may contain data , in the form of field , often knows as attributes , and code, in the form of procedures , often knows as method. Many of the most widely-used programming languages ( such as C++, Object Pascal, Java, Python etc.) are multi-paradigm programming languages that support object-oriented programming to a greater or lesser degree, typically in combination with imperative , procedural programming.

OBJECT

 (^) Objects are key to understanding object-oriented technology. Look around right now and you'll find many examples of real-world objects: your dog, your desk, your television set, your bicycle.

INTERFACE

 (^) An interface is a description of the actions that an object can do... for example when you flip a light switch, the light goes on, you don't care how, just that it does. In Object Oriented Programming, an Interface is a description of all functions that an object must have in order to be an "X". Again, as an example, anything that "ACTS LIKE" a light, should have a turn_on() method and a turn_off() method. The purpose of interfaces is to allow the computer to enforce these properties and to know that an object of TYPE T (whatever the interface is ) must have functions called X,Y,Z, etc.

CONSTRUCTOR

 (^) A special function having the "same name" as the ClassName, with no return-type.  (^) As the name implied, constructor is called each time when an instance is declared (or constructed).  (^) Used for initializing the data members of the instances created.

FEATURES OF OOP

 ENCAPSULATION

 INHERITANCE

 POLYMORPHISM

 ABSTRACTION

INHERITANCE

 (^) Is the mechanism of deriving new class from old one.  (^) It generally consists of two or more classes.  (^) Parent or base class are those classes which properties or method can be derived for child or derived class.  (^) Child or derived class are those classes which derived the properties or method from the parent or base class with having added its own properties and method.  (^) There are five types of inheritance and they are single, multiple, multilevel, hierarchical and hybrid.  (^) The example child derived the blood group from parent and it can also had its own features like height. It height can be more or less.

POLYMORPHISM

 (^) Ability to process objects differently as per their data types or class  (^) Allows values of different data types to be handled in a uniform manner  (^) Can perform polymorphism with the help of method overloading and overriding  (^) Two types of polymorphism: compile time polymorphism and run time polymorphism

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