Contents
What does the factory pattern do?
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. A class requires its subclasses to specify the objects it creates.
What is the use of factory method in Java?
The factory design pattern says that define an interface ( A java interface or an abstract class) and let the subclasses decide which object to instantiate. The factory method in the interface lets a class defer the instantiation to one or more concrete subclasses.
What is Factory pattern in Javascript?
The factory pattern wraps a constructor for different types of objects and returns instances of the objects via a simple API. It makes it easy to create different objects by exposing a simple API that return the specified object type. In the factory folder, let’s create a laptop.
What is a factory in Java?
Factory, as the name suggests, is a place to create some different products which are somehow similar in features yet divided into categories. In Java, factory pattern is used to create instances of different classes of the same type.
What is factory AngularJS?
AngularJS Factory Method makes the development process of AngularJS application more robust. A factory is a simple function which allows us to add some logic to a created object and return the created object. Whenever we create an object using factory it always returns a new instance for that object.
Why to use factory pattern?
The main reason for which the factory pattern is used is that it introduces a separation between the application and a family of classes (it introduces weak coupling instead
When to use factory pattern?
Factory method pattern can be used when there is a need to generate objects that belong to specific family. Along side this requirement, you also want to keep the decisions made regarding object instantiation in one place.
What is the difference between factory and strategy patterns?
Both patterns use “new” keyword to return an object (factory) or return and algorithm (strategy). Conceptually it seems different, factory is used for differed instantiation of similar group of classes. where as Strategy is used for switching between algorithms. But when i see their examples together, they look quite similar.
What is factory method?
Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes.