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You're looking to learn about Object-Oriented (OO) programming!

Object-Oriented Programming (OOP) is a programming paradigm that revolves around the concept of "objects" and the interactions between them. It's a way of designing and organizing code that's easy to understand, maintain, and extend.

Here are the key concepts in OOP:

1. Classes: A class is a blueprint or a template that defines the properties and behavior of an object. It's a way to define a custom data type.
2. Objects: An object is an instance of a class, which has its own set of attributes (data) and methods (functions).
3. Inheritance: Inheritance is the mechanism by which one class can inherit the properties and behavior of another class.
4. Polymorphism: Polymorphism is the ability of an object to take on multiple forms. This can be achieved through method overriding or method overloading.
5. Encapsulation: Encapsulation is the concept of hiding the internal implementation details of an object from the outside world, while exposing only the necessary information through public methods.
6. Abstraction: Abstraction is the process of exposing only the necessary information to the outside world, while hiding the internal implementation details.

Some common OOP concepts include:

• Constructors: Special methods that are called when an object is created.
• Destructors: Special methods that are called when an object is destroyed.
• Methods: Functions that are associated with an object.
• Properties: Data members that are associated with an object.
• Interfaces: Abstract classes that define a contract that must be implemented by any class that implements it.

OOP is widely used in many programming languages, including Java, C++, Python, and C#.

Do you have any specific questions about OOP or would you like to know more about a particular concept?