How can I implement a factory pattern in C++ and Java?

How can I implement a factory pattern in C++ and Java?

The factory pattern is a creational design pattern that provides an interface for creating objects. In C++, you can use a base class with virtual methods and derived classes for specific implementations. In Java, you can use interfaces and classes to achieve the same.

Can you provide a code example for both languages?

Sure! In C++, you might have a base class Shape and derived classes like Circle and Square. The factory class would create instances based on input. In Java, you can do something similar with an interface Shape and classes Circle and Square implementing it.

What are the advantages of using the factory pattern?

The factory pattern promotes loose coupling, enhances code maintainability, and allows for easier testing and scalability.

Are there any common pitfalls to avoid?

Yes, common pitfalls include overcomplicating the factory implementation and not adhering to the single responsibility principle.