What is the difference between Builder Pattern and Factory Pattern?

What is the difference between Builder Pattern and Factory Pattern?

The Builder Pattern is used to construct complex objects step by step, while the Factory Pattern is used to create objects without specifying the exact class.

Can you give me an example of each pattern?

Sure! In the Builder Pattern, you might have a PizzaBuilder that allows you to add toppings one by one. In the Factory Pattern, you could have a ShapeFactory that creates different shapes like circles or squares based on input.

When should I use one over the other?

Use the Builder Pattern when you need to create an object with many optional parameters. Use the Factory Pattern when you want to encapsulate the instantiation logic and return different types of objects.

Are there any scenarios where both patterns can be used together?

Yes, you can use both patterns together. For example, a Factory can return different builders for different types of objects, allowing for flexible object creation.