What is Abstract Factory pattern in Java?

Abstract Factory is a creational design pattern, which solves the problem of creating entire product families without specifying their concrete classes. Abstract Factory defines an interface for creating all distinct products but leaves the actual product creation to concrete factory classes.

What is the difference between factory and Abstract Factory pattern in Java?

Java. The main difference between a “factory method” and an “abstract factory” is that the factory method is a single method, and an abstract factory is an object. The factory method is just a method, it can be overridden in a subclass, whereas the abstract factory is an object that has multiple factory methods on it.

What are Abstract Factory in creational design patterns?

Abstract Factory is a creational design pattern that lets you produce families of related objects without specifying their concrete classes.

Where is Abstract Factory design pattern used?

The purpose of the Abstract Factory is to provide an interface for creating families of related objects, without specifying concrete classes. This pattern is found in the sheet metal stamping equipment used in the manufacture of Japanese automobiles.

What are the advantages of Abstract Factory pattern?

Advantage of Abstract Factory Pattern Abstract Factory Pattern isolates the client code from concrete (implementation) classes. It eases the exchanging of object families. It promotes consistency among objects.

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.

What is the difference between an Abstract Factory and factory design patterns?

The main difference between factory pattern and abstract factory pattern is that the factory pattern provides a method of creating objects without specifying the exact class used to create it while the abstract factory pattern provides a method to combine a group of individual factories without specifying their …

Is factory method always static?

No, factory class by default shouldn’t be static. Actually, static classes are not welcomed in OOP world since they can also convey some state and therefore introduce global application state. If you need only one factory object to be present, you can control it’s creation through singleton pattern.

What are the characteristics of creational design pattern?

Some examples of creational design patterns include:

  • Abstract Factory pattern: a class requests the objects it requires from a factory object instead of creating the objects directly.
  • Factory method pattern: centralize creation of an object of a specific type choosing one of several implementations.

When should I use Abstract Factory?

When to Use Abstract Factory Pattern: The client is independent of how we create and compose the objects in the system. The system consists of multiple families of objects, and these families are designed to be used together. We need a run-time value to construct a particular dependency.

What is difference between factory and Abstract Factory?

Factory Method pattern is responsible for creating products that belong to one family, while Abstract Factory pattern deals with multiple families of products. Factory Method uses interfaces and abstract classes to decouple the client from the generator class and the resulting products.

Why this pattern is called Abstract Factory?

Abstract Factory Pattern says that just define an interface or abstract class for creating families of related (or dependent) objects but without specifying their concrete sub-classes. That means Abstract Factory lets a class returns a factory of classes.