Which design pattern suggest multiple classes through which request is passed and multiple but only relevant classes carry out operations on the request?

Which design pattern suggest multiple classes through which request is passed and multiple but only relevant classes carry out operations on the request?

Discussion Forum

How is a factory method used in a design pattern?

In Factory pattern, we create object without exposing the creation logic to client and the client use the same common interface to create new type of object. The idea is to use a static member-function (static factory method) which creates & returns instances, hiding the details of class modules from user.

When to use a design pattern in Java?

Factory design patterns in Java is used once we have an excellent class with multiple sub-classes and a super input. In this, we need to define the interface or abstract class for creating an object. Subclasses are responsible for the creation of an instance of the class. The Factory Pattern is also called as Virtual Constructor.

Which is an example of a design pattern?

Factory is a cre a tional design pattern which is used to create different implementation objects of the same type. Let’s consider a simple example below: You have to design a logger API (not a web service API but a class level method ) which can log to different mediums like: In memory data structure. File on disk.

Which is a super class in factory design pattern?

Super class in factory design pattern can be an interface, abstract class or a normal java class. For our factory design pattern example, we have abstract super class with overridden toString () method for testing purpose. Let’s say we have two sub-classes PC and Server with below implementation.