Abstract Factory Pattern. An Abstract Factory Pattern is also known as Kit. Families of cross-platform GUI components and their production, Alternative Classes with Different Interfaces, Change Unidirectional Association to Bidirectional, Change Bidirectional Association to Unidirectional, Replace Magic Number with Symbolic Constant, Consolidate Duplicate Conditional Fragments, Replace Nested Conditional with Guard Clauses. So, this is the reason that Abstract Factory Pattern is one level higher than the Factory Pattern. Abstract Factory is a creational design pattern, which solves the problem of creating entire product families without specifying their concrete classes. Since a factory corresponds to a single product variant, all its products will be compatible. Here are some examples from core Java libraries: javax.xml.parsers.DocumentBuilderFactory#newInstance(), javax.xml.transform.TransformerFactory#newInstance(), javax.xml.xpath.XPathFactory#newInstance(). See the diagram carefully which is given below. The purpose of the Abstract Factory is to provide an interface for creating families of related objects, without specifying concrete classes. 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. Client code works with factories and products only through their abstract interfaces. Let us know if you liked the post. Abstract Factory is creational software design pattern. When the system needs to be configured with one of a multiple family of objects. This pattern provides interfaces for creating families of related or dependent objects without specifying their concrete classes. On one hand it isolates the creation of objects from the client that needs them, giving the client only the possibility of accessing them through an interface, which makes the manipulation easier. © Copyright 2011-2018 www.javatpoint.com. There are two concrete factories, which return both products in a single variant. The Abstract Factory pattern has both benefits and flaws. Identification: The pattern is easy to recognize by methods, which return a factory object. JavaTpoint offers too many high quality services. It eases the exchanging of object families. Please mail your requirement at hr@javatpoint.com. | Sitemap. Developed by JavaTpoint. In this example, buttons and checkboxes will act as products. This pattern is found in the sheet metal stamping equipment used in the manufacture of Japanese automobiles. Step 7: Create a FactoryCreator class to get the factories by passing an information such as Bank or Loan. They have two variants: macOS and Windows. 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. All rights reserved. That’s the only way we can improve. Duration: 1 week to 2 week. Abstract factory pattern based solution, 3. Step 6: Create the factory classes that inherit AbstractFactory class to generate the object of concrete class based on given information. If you can’t figure out the difference between various factory patterns and concepts, then read our Factory Comparison. 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. So, this is the reason that Abstract Factory Pattern is one level higher than the Factory Pattern. Many frameworks and libraries use it to provide a way to extend and customize their standard components. The abstract factory defines an interface for creating buttons and checkboxes. Then after we will create concrete classes. 1. It gives birth to several factories that go on to create objects of a particular type. Here, we are calculating the loan payment for different banks like HDFC, ICICI, SBI etc. Each factory type corresponds to a certain product variety. All Rights Reserved. Then, the factory is used for creating specific sub-components. Mail us on hr@javatpoint.com, to get more information about given services. Client code works with factories and products using abstract interfaces. This lets the client code work with any product variants, created by the factory object. When the system needs to be independent of how its object are created, composed, and represented. Step 5: Create an abstract class (i.e AbstractFactory) to get the factories for Bank and Loan Objects. When you want to provide a library of objects that does not show implementations and only reveals interfaces. Abstract Factory Pattern . Design global car factory using abstract factory pattern, 2. Difference between AbstractFactory and Factory design patterns are as follows: Factory Method is used to create one product only but Abstract Factory is about creating families of related or dependent products. Abstract Factory Pattern isolates the client code from concrete (implementation) classes. The Abstract Factory pattern is a modification of the Factory Pattern and is extensively used in JAVA to solve creational problems. Abstract Factory defines an interface for creating all distinct products but leaves the actual product creation to concrete factory classes. JavaTpoint offers college campus training on Core Java, Advance Java, .Net, Android, Hadoop, PHP, Web Technology and Python. Abstract factory pattern is yet another creational design pattern and is considered as another layer of abstraction over factory pattern.In this tutorial, we will expand the scope of car factory problem discussed in factory pattern.We will learn when to use factory pattern by expanding scope of car factory and then how abstract factory pattern solves the expanded scope.
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