Design Model (II)-factory Model

Factory)
Four roles are involved: Abstract Factory roles, specific factory roles, abstract product roles, and specific product roles.
Abstract Factory roles use interfaces or parent classes to describe factory behaviors,
A specific factory role is responsible for creating a certain type of product objects.
Abstract product classes can use interfaces or parent classes to describe the behavior characteristics of product objects.
A specific product class is a specific object.

The factory mode is different from the static factory mode:
The factory model also achieves polymorphism in the factory class, not just on the product object.
It can correspond to a specific factory for different types of products.

The design mode is as follows:

Abstract Factory ifacloud

package org.test.design.f;/** *  * @author lushuaiyin * */public interface IFactory {IProduct createProduct();}

Specific factory class carfactory computerfactory

package org.test.design.f;public class CarFactory implements IFactory {public IProduct createProduct() {return new Car();}}

package org.test.design.f;public class ComputerFactory implements IFactory {public IProduct createProduct() {return new Computer();}}

Abstract product class iproduct

package org.test.design.f;public interface IProduct {void work();}

Product-specific car computer

package org.test.design.f;public class Car implements IProduct{public void work() {System.out.println("I am car.");}}

package org.test.design.f;public class Computer implements IProduct{public void work() {System.out.println("I am Computer.");}}

Test:

Package Org. test. design. f; public class testmain {/*** @ Param ARGs */public static void main (string [] ARGs) {ifactory carfactory = new carfactory (); iproduct car = (iproduct) carfactory. createproduct (); car. work (); ifactory pcfactory = new computerfactory (); iproduct Pc = (iproduct) pcfactory. createproduct (); PC. work () ;}/ * print I am car. I am computer. */