How are templates integrated into the object-oriented programming paradigm?

In object-oriented programming (OOP), patterns are proven solutions to common design problems. They are not part of the language directly but are implemented through classes, interfaces, and objects.

The integration of patterns in OOP occurs through:

• Classes and objects: patterns describe how to organize classes and their interactions.
• Inheritance and polymorphism: many patterns use these mechanisms for extensibility and flexibility.
• Encapsulation: hiding implementation details, providing interfaces.

For example, the "Factory" pattern is implemented through creating an interface for object creation and specific factory classes that instantiate the required objects. Thus, patterns help structure the code, making it more maintainable and extensible.