Classes refer to a fundamental concept in object-oriented programming, where a class is a blueprint or template for creating objects with specific attributes and behaviors.
A class defines the properties, such as data members and methods, that an object of that class will have. An object is an instance of a class, created from the class blueprint. Classes allow for encapsulation and abstraction, meaning that the implementation details of a class can be hidden from the user and only the necessary information is exposed.
Classes allow for code reuse and organization, as classes can be defined once and then used to create multiple objects. This helps to minimize code duplication and makes it easier to manage and maintain the code.
Classes are commonly used in object-oriented programming languages such as Java, Python, and C++, and they play a central role in the design of object-oriented systems and applications.