Developers can apply a Singleton Pattern on the factory class or make the factory method static. For example, we could create some concrete classes that implement the Shape interface.

To provide an interface for creating families of related or dependent objects without specifying their concrete classes. There are five creational patterns, namely: the Abstract Factory, Factory ...

Singleton patterns – Restrict instantiation of a class to one object.. Factory patterns – Provide an interface for creating families of related or dependent objects and specify a policy for creating ...