Design Patterns in .NET 6: Reusable Approaches in C# and F# for Object-Oriented Software Design

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022

D. NesterukDesign Patterns in .NET 6https://doi.org/10.1007/978-1-4842-8245-8_4

4. Factories

Dmitri Nesteruk¹  

(1)

St. Petersburg, c.St-Petersburg, Russia

 

I had a problem and tried to use Java. Now I have a ProblemFactory.

—Old Java joke

This chapter covers two GoF patterns: Factory Method and Abstract Factory. These patterns are closely related, so we’ll discuss them together. The truth, though, is that the real design pattern is called Factory and that both Factory Method and Abstract Factory are simply variations that are important, but certainly not as important as the main thing.

Scenario

Let’s begin with a motivating example. Suppose you want to store information ...