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a photograph of apples in different colors, separated into different baskets
Figure 11.1 credit: modification of work "Fresh, bright apples newly picked", by Colorado State University Extension/Flickr, Public Domain

A programmer can model real-world entities as objects for better program design and organization. A class defines a type of object with attributes and methods. Many instances of a class type can be created to represent multiple objects in a program.

Classes promote reusability. Classes add benefits like data abstraction and encapsulation, which organize code for better usability and extensibility.

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