What is factory design pattern with real time example?
The Factory Design Pattern is a commonly used design pattern where we need to create Loosely Coupled System. Basically, it comes under Creational Pattern and it is used to create instance and reuse it.
What is factory design pattern in Java Real Time example?
Factory design pattern is used to create objects or Class in Java and it provides loose coupling and high cohesion. 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.
How does Factory Pattern work in Java?
The factory design pattern says that define an interface ( A java interface or an abstract class) and let the subclasses decide which object to instantiate. The factory method in the interface lets a class defer the instantiation to one or more concrete subclasses.
What is factory design pattern in C# with example?
Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes. Factory Method defines a method, which should be used for creating objects instead of direct constructor call ( new operator).
How does a factory design pattern work?
Factory method is a creational design pattern, i.e., related to object creation. In Factory pattern, we create objects without exposing the creation logic to the client and the client uses the same common interface to create a new type of object.
How does Factory pattern work in Java?
Where is Factory pattern used in Java?
The factory design pattern is used when we have a superclass with multiple sub-classes and based on input, we need to return one of the sub-class. This pattern takes out the responsibility of the instantiation of a class from the client program to the factory class.
When should we use factory pattern?
It is good idea to use factory methods inside object when: Object’s class doesn’t know what exact sub-classes it have to create. Object’s class is designed so that objects it creates were specified by sub-classes.
How do you implement a factory pattern?
Design Pattern – Factory Pattern
- Implementation.
- Create an interface.
- Create concrete classes implementing the same interface.
- Create a Factory to generate object of concrete class based on given information.
- Use the Factory to get object of concrete class by passing an information such as type.
- Verify the output.
Why to use factory pattern?
+The main reason for which the factory pattern is used is that it introduces a separation between the application and a family of classes (it introduces weak coupling instead
What is factory method design pattern?
The Factory Method Design Pattern is where you create a class (the factory) which has the sole responsibility of creating other classes. For example, imagine our application can share data with many popular social applications.
What is a singleton design pattern and factory design pattern?
Singleton pattern is the simplest and the factory method is supposed to be a common design pattern that is widely used. The builder pattern is used to construct complex objects and is mostly used in developing complex applications.
Why do we need abstract factory design pattern?
Abstract Factory Pattern provides an interface for creating families of related dependent objects without specifying their concrete classes. The Abstract Factory Pattern provides a way to encapsulate a group of individual factories that have a common theme without specifying their concrete classes.