These are the three requirements based on which the “Animal Factory” would try to return the appropriate factory. Whenever you need to write some object creation logic, try to see if this pattern fits your use case, don’t try to fit forcefully, that will break the whole purpose of using design patterns. Factory Method Pattern. * It provides an interface for creating families of related or dependent objects without specifying their concrete classes. One is “getSource” one is “getSource”. You need to modify the same code again & again. After a lot of search and study, I endeavored to find an actual need for the abstract design pattern. It falls under the Creational Design Pattern. The purpose of the Abstract Factory is to provide an interface for creating families of related objects, without specifying concrete classes. All of the mentioned products implement make() method which will be invoked by the caller to finally prepare the product. Abstract Factory is one of the key patterns and it falls under the creational segment. These objects have some meanings in group. It will return “sourceFactory” object. Example — add support for coke, coke can be mixed with water or soda, but not with milk or coffee powder. The instantiation logic is concentrated in the factory, so if you need to remove some existing implementation, remove the product & the factory. Abstract Factory Design Pattern Benefits Abstract Factory design pattern provides approach to code for interface rather than implementation. If the requirements for this “Animal Factory” is that “I need a wild animal. Customization & Preparation are sample generic objects showing what can be the possible customization parameters & overall ingredients in the system across products. Structural code uses type names as defined in the pattern definition and UML diagrams. When to use Abstract Factory Design Pattern? Abstract Products declare interfaces for a set of distinct but related products which make up a product family.. Applicability & Examples We should use the Abstract Factory design pattern when: the system needs to be independent from the way the products it works with are created. Similarly other variants of coffee might differ in terms of percentage of ingredients like say the same quantity of Cappuccino may need more coffee powder than the same quantity of Latte. ; It provides an interface for creating families of related or dependent objects without specifying their concrete classes. So “online” object is Youtube. There are two factories “Course” factory and “Source” factory. The “Domestic Animal” factory would manage these classes. In this case, we are calling, “course.getCourse” programming. Using that “online” object, we are calling “getSourceName”. The factory would return the dog object as it will be more appropriate than the cat. For example: 1. Abstract Factory Design Pattern: * It falls under Creational Design Pattern. Factory Design Pattern in C# with Real-Time Example. How do you write your code in such a way that your changes are always minimum. Most of the time, I don’t use factories. It should be easy to change formula of any of the beverages. This tutorial highlights implementing the abstract factory design pattern in your Java projects, focusing on implementation, structure, and helpful examples. This post is not about designing the complete vending machine, rather it discusses only one portion of the machine — how to support different variants of beverages, customers will browse all product & choose any one as per their choice. introduces loose coupling between classes which is the most important principle one should consider and apply while designing the application architecture So, using concrete objects, we can do any number of operations. The Abstract Factory Pattern is a creational Gang of Four (GoF) design pattern, defined in their seminal book Design Patterns: Elements of Reusable Object-Oriented Software, in which they presented a catalogue of simple and succinct solutions to commonly occurring design problems. They are Domestic and Wild. Abstract Factory Design Pattern Video Java Implementation in English. If we send “Source”, it will analyze the data and return “Sourcefactory” object. Also there is a static method getProductFactory() which facilitates the discovery of factories to the client. Cool! Here’s another example. Say default values or formula of coffee preparation comes from service 1 & formula of coke comes from service 2. The client should be independent of how objects are created and for which class object is created. A Factory Pattern or Factory Method Pattern says that just define an interface or abstract class for creating an object but let the subclasses decide which class to instantiate. 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