factory design pattern

I. IntroductionThe factory mode is a creation mode, which can be divided into three categories:1) simple factory)2) Factory method mode (simple factory)3) Abstract Factory model (simple factory)These three modes are gradually abst

{ @Override public Sender produce() { return new SmsSender(); } } Provide a factory interface: public interface Provider { public Sender produce(); } Test class: public class Test { public static void main(String[] args) { Provider provider = new SendMailFactory(); Sender sender = provider.produce(); sender.Send(); } } In fact, the advantage of this mode is that if you want

Abstract Factory is a type of factory-created model. Feature: Customers interact only with interfaces defined by an abstract class, rather than using specific classes of interfaces. Here is an example of Python, the operating environment is Python 2.7 importrandomclasspetshop: "" "Apetshop" "" def__init__ (Self,animal_factory=none): Self.pet_factory=animal_factorydefshow_pet (self): "" "Createandshowapetu

solve the dilemma after 1 years. Let me redesign the door:After brewing, the new design emerges: the common implementation of the abstract factory pattern is implemented using the factory method pattern, or it can be implemented using the prototype

();} else {return null;}}} specific Dog class: Dog.java Package Cn.itcast_01;public Class Dog extends Animal {@Overridepublic void Eat () {System.out.println ("Dog eats Meat");}} specific cat type: Cat.java Package Cn.itcast_01;public class Cat extends Animal {@Overridepublic void Eat () {System.out.println ("Cat eats Fish");}} Test class: Animaldemo.java Package Cn.itcast_01;public class Animaldemo {public static void main (string[] a

Simple Factory mode:The essence of the simple factory model is that a factory class dynamically determines which product class (these product classes inherit from a parent class or interface) should be created, based on the parameters passed in.Note: Strictly speaking, the simple Factory mode is not a

Design pattern--Abstract Factory mode1, definition: Provide an interface that creates a series of related or interdependent objects without having to develop their specific classes;2, the following is a schematic diagram of the abstract factory pattern:3, the implementation

Factory Design Pattern (FDP) is comparatively small in granularity than either simple factory or abstract factory, one kind Factory produce one and only one kind of production. The abstract of FDP is to let the subtype of

The Simple Factory mode is the creation mode of the class, also called the Static Factory method (Factory) mode. The simple factory model is determined by a factory object to create an instance of that product class. 1. Several forms of the

Principles of Design Patterns: Programming for interfaces the role of the factory model: A. In the design of an application, create or unify the creation of objects in one place (spring) B. You can add objects directly without changing the application, while also facilitating the maintenance of objects. type of factory