# Factory Method

*noun*

say it: **“FAK-tuh-ree METH-ud”** **/ˈfæktəri ˈmɛθəd/**

A design pattern where a base class leaves the choice of which object to create to its subclasses.

## What is **Factory Method**?

**Factory Method** — A design pattern where a base class does its work with an object it gets from a method it doesn't fill in itself; each subclass overrides that method to create the right kind. The base class never names a concrete class.

```csharp
abstract class Notifier
{
    protected abstract IMessage CreateMessage(string text); // the factory method
    public void Send(string text) => CreateMessage(text).Deliver();
}
class EmailNotifier : Notifier
{
    protected override IMessage CreateMessage(string text) => new EmailMessage(text);
}
```

## In a sentence

- “With the **Factory Method** pattern, EmailNotifier and SmsNotifier each create their own kind of message.”

Level: Freelancer · [More OOP terms at this level](https://www.ask-codey.com/glossary?category=oop&level=4)

Updated: October 28, 2026

Source: https://www.ask-codey.com/glossary/factory-method