Factory Pattern

The Factory Pattern is a creational design pattern that defines an interface or abstract class for creating objects, but allows subclasses to alter the type of objects that will be created. Instead of instantiating objects directly using a constructor, the pattern provides a method for creating objects, abstracting away the instantiation logic and making the code more modular and easier to maintain.

The Factory Pattern is widely used in software development for various purposes, particularly in scenarios where object creation is complex or where the exact type of object that needs to be created is determined at runtime. Here are some common usage scenarios and benefits of the Factory Pattern:

Usage Scenarios

1. Complex Object Creation: When the process of creating an object is complex, involves multiple steps, or requires some configuration, using a factory simplifies the client code.
2. Decoupling Object Creation from Usage: When you want to decouple the client code from the specific classes it needs to instantiate. This promotes loose coupling and adheres to the Dependency Inversion Principle.
3. Managing Collections of Related Objects: When you have a collection of related objects that need to be managed or instantiated based on some condition or context.
4. Switching Between Families of Products: When you need to switch between different families of related objects that share a common interface or base class.
5. Enhancing Code Maintainability and Extensibility: When you anticipate frequent changes or additions to the types of objects being created, using a factory makes it easier to introduce new types without modifying existing client code.