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";s:4:"text";s:4451:"Simple Factory Design Pattern is one of the many design patterns – best practices on how to solve common problems. getInstance() method of java.util.Calendar, ResourceBundle and NumberFormat uses the Factory pattern. Factory design pattern is used to create objects or Class in Java and it provides loose coupling and high cohesion. The Factory method lets a … Lets you produce families of related objects without specifying their concrete classes. Tutorial explains Gang of Four's Factory Method design pattern in Java with examples, including its definition, UML class diagram, example use case of factory pattern implementation in Java, Java code for factory pattern use case implementation, followed by a detailed explanation of the code. Advantages: * It allows loose-coupling. Abstract Factory (GOF): Provide an interface for creating families of related or dependent objects without specifying their concrete classes. 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. Factory Method Design Pattern in Java Back to Factory Method description . Abstract Factory pattern provided a way to encapsulate a group of individual factories. Design patterns can be divided in 4 different types. According to GoF, this pattern “defines an interface for creating an object, but let subclasses decide which class to instantiate. Factory pattern encapsulate object creation logic which makes it easy to change it later when you change how object gets created or you can even introduce new object with just change in one class. Implementation. Abstract Factory . Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes. Factory design pattern is used to create objects or Class in Java and it provides loose coupling and high cohesion. Let me explain by taking an example. The Factory Design Pattern or Factory Method Design Pattern is one of the most used design patterns in Java. Example of Factory Method Source of Confusion: Often, one can call a class that used in "Factory Method" pattern as "Factory". Factory Method pattern in Java. We will see some of the factory design pattern usage in JDK. Here we have listed down some of widely used design pattern in Java. We will solve the problem for owners of multi-cuisine restaurant by implementing Abstract Factory Pattern. Note that this pattern is also known as Factory Method Design Pattern. Check it out » Design Patterns in Java. When you are creating an object in Java, you may not know what types of objects you might … Factory design pattern is widely used in Java and considering its uses it rightfully earns the popularity. A design patterns are well-proved solution for solving the specific problem/task.. Now, a question will be arising in your mind what kind of specific problem? Design patterns in java are best practices which are used to resolve some know issues. Creational Patterns. Factory Design Pattern: * It falls under Creational Design Pattern. The factory pattern is one of the best known patterns in Java. Factory Method is a creational design pattern that provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created. Let’s first learn how to implement a factory design pattern in java and then we will look into factory pattern advantages. This method of design pattern is also known as virtual constructor. Full code example in Java with detailed comments and explanation. According to GoF, this pattern “defines an interface for creating an object, but let subclasses decide which class to instantiate. * Factory pattern says that object creation will be handled by another class using the input type. If you're using lambda expressions, you can use those to implement the pattern, though beware scaling. Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes. Abstract Factory. The Factory Design Pattern or Factory Method Design Pattern is one of the most used design patterns in Java. Java Design Patterns. Now that I’ve created my dog factory, the Dog interface, and all of the dog sub-types, I’ll create a “driver” program named JavaFactoryPatternExample to test the Dog factory. 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