一 产品等级和产品族

产品等级：Iphone4,Iphone5,Iphone6都是Iphone系列。属于同一产品等级（产品等级结构即产品的继承结构）

产品族：XiaoMi4 和 IPhone4 是同一个产品族（产品族是指由同一个工厂生产的，位于不同产品等级结构中的一组产品）

二 抽象工厂模式与工厂方法模式的区别

抽象工厂模式与工厂方法模式最大的区别在于，工厂方法模式针对的是一个产品等级结构，而抽象工厂模式需要面对多个产品等级结构

例如

用抽象工厂生产Iphone 和 XiaoMi 两个品牌的手机（两个产品等级）

代码如下

手机接口

package factory;/** * Created by dingshuangkun on 2018/1/26. */public interface Phone {    void producePhone();}

 

Iphone 手机接口

package factory;/** * Created by dingshuangkun on 2018/1/26. */public interface Iphone extends Phone {    void produceIphone();    @Override    default void producePhone(){        produceIphone();    }}

package factory.impl;import factory.Iphone;/** * Created by dingshuangkun on 2018/1/26. */public class Iphone4 implements Iphone {    @Override    public void produceIphone() {        System.out.println("------生产Iphone4--------");    }}

 

package factory.impl;import factory.Iphone;/** * Created by dingshuangkun on 2018/1/26. */public class Iphone5 implements Iphone {    @Override    public void produceIphone() {        System.out.println("------生产Iphone5--------");    }}

 

小米手机接口

package factory;/** * Created by dingshuangkun on 2018/1/26. */public interface XiaoMi extends Phone{    void produceXiaoMi();     @Override     default void producePhone(){         produceXiaoMi();     }}

package factory.impl;import factory.XiaoMi;/** * Created by dingshuangkun on 2018/1/26. */public class XiaoMi4  implements XiaoMi{    @Override    public void produceXiaoMi() {        System.out.println("-------生产小米4---------");    }}

 

package factory.impl;import factory.XiaoMi;/** * Created by dingshuangkun on 2018/1/26. */public class XiaoMi5 implements XiaoMi {    @Override    public void produceXiaoMi() {        System.out.println("------------生产小米5----------");    }}

 

Iphone工厂

package factory.impl;import factory.Creator;import factory.Iphone;import factory.Phone;/** * Created by dingshuangkun on 2018/1/26. */public class IPhoneFactory implements Creator {    @Override    public 
    
      T creatorProduct(Class
     
       c) {        Iphone iphone = null;        try {            iphone =(Iphone)c.newInstance();        }catch (Exception e){            e.printStackTrace();        }        return (T)iphone;    }}
     
    

 

小米工厂

package factory.impl;import factory.Creator;import factory.Iphone;import factory.Phone;import factory.XiaoMi;/** * Created by dingshuangkun on 2018/1/26. */public class XiaoMiFactory implements Creator {    @Override    public 
    
      T creatorProduct(Class
     
       c) {        XiaoMi xiaoMi = null;        try {            xiaoMi =(XiaoMi)c.newInstance();        }catch (Exception e){            e.printStackTrace();        }        return (T)xiaoMi;    }}
     
    

 

客户端

package factory;import factory.impl.*;/** * Created by dingshuangkun on 2018/1/26. */public class Client {    public static void main(String[] args) {        Creator xiaomiFactory = new XiaoMiFactory();        Phone xiaoMi4 = xiaomiFactory.creatorProduct(XiaoMi4.class);         Phone xiaoMi5 = xiaomiFactory.creatorProduct(XiaoMi5.class);        Creator iphoneFactory = new IPhoneFactory();        Phone iphone4 = iphoneFactory.creatorProduct(Iphone4.class);        Phone iphone5 = iphoneFactory.creatorProduct(Iphone5.class);        xiaoMi4.producePhone();        xiaoMi5.producePhone();        iphone4.producePhone();        iphone5.producePhone();    }}

 

运行结果

-------生产小米4---------

------------生产小米5---------- ------生产Iphone4-------- ------生产Iphone5--------

Process finished with exit code 0