What is the OOP ?
: OOP is the creation of objects that has both data and functions.
What is the principle of OOP ?
: Abstraction, Encapsulation, Inheritance and Polymorphism.
What is an Object ?
Objects has data and instructions to act on that data.
What is class ?
: Class is like a template. Blueprint for an object.
It is a user-defined data type, which holds its own data members and member functions which can be accessed and used by an instance of that class.
It has different components of a class.
1. Public : The class members can be accessed from everywhere.
2. Private : The class members can only be accessed by the defining class.
3. Protected : The class memeberes can only be accessed by parent and interited classes.
What is Encapsulation ?
It is a group of properties and members under a single class or object. Programs can be really long and there can easily be a ton of moving parts in it. After some time it gets really tough to maintain all these objects without them running into complexity.
We can encapsulate a set of objects into different classes. We can prevent the repitition of code and also shorten the length of your code.
What is Inheritance ?
It is the ability to acquire the properties of existing classes and create new ones. Inheritance allows you to reuse code.
What is polymorphism ?
Polymorphism referes to one name with many forms. It is the ability of one function to perfom in different ways.
What is Method Overloading ?
When a class has multiple methods with the same names but a different set of parameters.
What is Method Overriding ?
this is only possible for subclass has the same method as the parent class.
RULE : same parameter list, same return type, have more restrictive modifier than that of the parent class.
What is Method Overriding
https://www.partech.nl/en/publications/2020/10/basic-principles-of-object-oriented-programming#
Basic Principles of Object-Oriented Programming
www.partech.nl
