How do you implement abstract factory method?
Declare abstract product interfaces for all product types. Then make all concrete product classes implement these interfaces. Declare the abstract factory interface with a set of creation methods for all abstract products. Implement a set of concrete factory classes, one for each product variant.
What is the use of abstract factory design 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.
How does abstract factory pattern work?
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. An Abstract Factory Pattern is also known as Kit.
What is factory and abstract factory in 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.
Where is abstract factory 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 is difference between factory pattern and abstract factory pattern?
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 …
What is the purpose of Abstract Factory?
The purpose of the Abstract Factory is to provide an interface for creating families of related objects, without specifying concrete classes.
When should we use abstract factory pattern?
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 are the advantages of using abstract factory pattern?
The Abstract Factory pattern has the following benefits and liabilities:
- It isolates concrete classes.
- It makes exchanging product families easy.
- It promotes consistency among products.
- Supporting new kinds of products is difficult.
What is the purpose of abstract factory?
What are the benefits of applying abstract factory design pattern?
When would you use abstract factory over Factory method?
Factory Method is used to create one product only but Abstract Factory is about creating families of related or dependent products.
What is abstract factory pattern in Java?
Therefore, this pattern is also known as “A Factory of Factories”. Abstract Factory Pattern in java encapsulates a group of factories in the process of object creation . The essence of this pattern is that, it separates the object creation from the object usage. Apart from that, this pattern also creates families of related objects.
What are the different template methods for abstract factory design?
Template Method 15. Mediator 16. Chain of Responsibility 17. Observer 18. Strategy 19. Command 20. State 21. Visitor 22. Interpreter 23. Iterator 24. Memento 25. Dependency Injection 26. Thread Safety in Java Singleton Welcome to Abstract Factory Design Pattern in java example. Abstract Factory design pattern is one of the Creational patterns.
What is an AbstractFactory interface?
The Abstract Factory deals with families of dependent objects. With that in mind, we’re going to introduce one more family Color as an interface with a few implementations ( White, Brown,… ). We’ll skip the actual code for now, but it can be found here. Now that we’ve got multiple families ready, we can create an AbstractFactory interface for them:
What are some examples of factory design patterns in JDK?
Abstract Factory Design Pattern Examples in JDK javax.xml.parsers.DocumentBuilderFactory#newInstance() javax.xml.transform.TransformerFactory#newInstance() javax.xml.xpath.XPathFactory#newInstance()