Is the Factory pattern useful?

Is the Factory pattern useful?

Advantage of Factory Design Pattern Factory Method Pattern allows the sub-classes to choose the type of objects to create. It promotes the loose-coupling by eliminating the need to bind application-specific classes into the code.

What is the factory pattern used for?

The Factory Method pattern is a design pattern used to define a runtime interface for creating an object. It’s called a factory because it creates various types of objects without necessarily knowing what kind of object it creates or how to create it.

Which is an example of the factory design pattern?

With Simple Factory, concrete class instantiation is encapsulated. It decouples the client code from the object creation code. > Defines an interface for creating an object, but lets classes that > implement the interface decide which class to instantiate. The Factory > method lets a class defer instantiation to subclasses.

How is the factory method used in a class?

It encapsulates the object instantiation process. Factory Method: Defines an interface for creating an object, but let’s the classes that implement the interface decide which class to instantiate. The Factory method lets a class defer instantiation to subclasses.

Why do we use factory pattern in Java?

And it is especially not called a Factory (nor Abstract Factory). The Factory pattern vogue stems from an almost-dogmatic belief among coders in “C-style” languages (C/C++, C#, Java) that use of the “new” keyword is bad, and should be avoided at all costs (or at least centralized).

Why should I use factory class instead of direct object construction?

Case in point, by using “new” and a public constructor, you are coupling the calling code to a specific construction method of a specific concrete class. Your code now has to know that a class MyFooObject exists, and has a constructor that takes a string and an int.