Often, designs start out using Factory Method (less complicated, more customizable, subclasses proliferate) and evolve toward Abstract Factory, Prototype, or Builder (more flexible, more complex) as the designer discovers where more flexibility is needed.

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To address such concerns, you can use the factory method pattern. A Factory Pattern or Factory Method Pattern says that just define an interface or abstract class for creating an object but let the subclasses decide which class to instantiate. Other design patterns require new classes, whereas Factory Method only requires a new operation. Simply we will create a new class called “PropellerFan” and inheret this class with IFan interface as we have done for other fans. The factory design pattern relies on a type hierarchy. So in this tutorial, we’ve seen a way to use factory pattern to dynamically create objects inside JS. Full code example in Java with detailed comments and explanation. This pattern is a classic Gang of Four creational design pattern that is concerned with the creation of objects in an application. Factory Method Pattern. Dont use a factory class unless:-You depend on an external resource but you don't know exactly which one yet. Factory Method is a creational design pattern that provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created. Factory Method: creation through inheritance. This pattern is a classic Gang of Four creational design pattern that is concerned with the creation of objects in an application. In this pattern, an interface is used for creating an object, but let subclass decide which class to instantiate. It comes in different variants and implementations. In this article, I am going to discuss the Factory Method Design Pattern in C# with an example. What is the factory pattern? Factory Method Design Pattern in C# with Real-time Example. And since they have created a "huge fabric class with thousands of CreateXXX static methods", that sounds to an anti-pattern (a God class maybe? Prototype: creation through delegation. I have come across numerous cases where a Factory class is coded when a simple constructor would be adequate. We use an abstract class as the base. Don’t worry: the objects are still created via the new operator, but it’s being called from within the factory method. This article is second part of Factory Patterns article series and is the continuation of Part1: Simple Factory Pattern.In first part we have learned Simple Factory Pattern. The Factory pattern is the most overused and abused design pattern.