设计模式学习笔记五：抽象工厂模式

来源：互联网发布：藏民对十一世班禅知乎编辑：程序博客网时间：2024/05/01 03:06

抽象工厂模式是工厂方法模式的进一步抽象，适用于有多个产品族的场景，拿美食举例：

美食可分为中餐和西餐，中餐又有东北菜，湘菜，粤菜等。而西餐又有法式菜、美式菜、德式菜等。这种可以称之为产品族。

个人认为抽象工厂顶级类应该都是单例的。

直接上代码了，代码与上面举例业务无关：

package com.array7.abstract_factory;/** * @author array7 * */public class Run {public static void main(String[] args) {ProductFactory.getInstance().createPorductA1().create();ProductFactory.getInstance().createPorductB1().create();ProductFactory.getInstance().createPorductA2().create();ProductFactory.getInstance().createPorductB2().create();}}abstract class ProductAbstractFactory {public abstract IProductA createPorductA1();public abstract IProductA createPorductA2();public abstract IProductB createPorductB1();public abstract IProductB createPorductB2();}class ProductFactory extends ProductAbstractFactory {private static final ProductFactory facotry = new ProductFactory(); private ProductFactory() {/*closed*/}public static ProductFactory getInstance() {return facotry;}@Overridepublic IProductA createPorductA1() {return new ProductA1();}@Overridepublic IProductA createPorductA2() {return new ProductA2();}@Overridepublic IProductB createPorductB1() {return new ProductB1();}@Overridepublic IProductB createPorductB2() {return new ProductB2();}}interface IProductA {void create();}interface IProductB {void create();}class ProductA1 implements IProductA {@Overridepublic void create() {System.out.println("product A1");}}class ProductA2 implements IProductA {@Overridepublic void create() {System.out.println("product A2");}}class ProductB1 implements IProductB {@Overridepublic void create() {System.out.println("product B1");}}class ProductB2 implements IProductB {@Overridepublic void create() {System.out.println("product B2");}}

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