What is the difference between Factory Method and Abstract Factory?

What is the difference between Factory Method and Abstract Factory?

The Factory Method pattern defines an interface for creating an object but allows subclasses to alter the type of objects that will be created. In contrast, the Abstract Factory pattern provides an interface for creating families of related or dependent objects without specifying their concrete classes.

Can you give me an example of each pattern?

Sure! For Factory Method, imagine a ShapeFactory that creates different shapes like circles or squares based on input. For Abstract Factory, consider a GUIFactory that creates UI components like buttons and text fields for different operating systems.

When should I use one over the other?

Use Factory Method when you need to delegate the instantiation process to subclasses. Use Abstract Factory when you need to create families of related objects without specifying their concrete classes.

Are there any drawbacks to using these patterns?

Yes, both patterns can introduce complexity and make the code harder to understand if overused. It's important to evaluate if the added abstraction is necessary for your project.