creational-design-pattern

Design Pattern	Definition	Purpose of Use	How to Use
Factory Method	Provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created.	- Decouple from specific subclasses. - Easily extend by adding new subclasses.	Define an interface or abstract class containing the Factory Method, then implement the Factory Method in the subclasses.
Abstract Factory	Provides an interface for creating families of related or dependent objects without specifying their concrete classes.	- Maintain consistency among related objects.	Define an interface or abstract class for the Abstract Factory, then implement this interface in concrete classes.
Builder	Allows constructing a complex object step by step.	- Build objects with multiple attributes or options.	Create a Builder class for the object to be constructed, define methods for setting attributes or options, and implement a build method for constructing the object.
Prototype	Allows creating new objects by copying an existing object.	- Create multiple copies of an object without recreating it from scratch.	Define a copy method for object copying or implement the Cloneable interface (if available).
Singleton	Ensures that a class has only one instance and provides a global point of access to it.	- Ensure only one instance of a class. - Share the instance throughout the application.	Implement the Singleton class by ensuring the constructor is private and providing a static method to access the Singleton instance.