一、工厂方法模式说明：.docx

一、工厂方法模式说明:工厂方法模式是简单工厂模式的扩展，实现了某具体的工厂类生产某具体的产品，使工厂类生产的产品更加具体，而这些具体的工厂类都从抽象的工厂接口继承。工厂方法模式的实现图如下所例如：工厂类中的AppleFactory负责生产apple；PearFactory负责生产pear。二、工厂方法模式设计：采用工厂方法模式设计以前的果园管理系统。（注：在工厂类中采用了单例模式的设计）packagecom.solid.factorymethod;/*工厂方法模式（产品接口）*authorsolidpublicinterfaceFruit/种植voidgrant();生长voidgrow();收获voidharvest();packagecom.solid.factorymethod;/*工厂方法模式(具体产品类一)*©authorsolidpublicclassAppleimplementsFruit/苹果种植publicvoidgrant()System.out.printIn("applegrant");)苹果生长publicvoidgrow()System.out.println("applegrow");苹果收获publicvoidharvest()System.out.println("appleharvest");公共方法publicstaticvoidlog(Stringstr)System.out.println(str);packagecom.solid.factorymethod;/*工厂方法模式(具体产品类二)*authorsolid*/publicclassPearimplementsFruit梨种植publicvoidgrant()System.out.printIn("peargrant");/梨生长publicvoidgrow()System.out.printIn("peargrow");梨收获publicvoidharvest()System.out.printIn("pearharvest");公共方法publicstaticvoidlog(Stringstr)System.out.printIn(str);packagecom.solid.factorymethod;/*工厂方法模式(工厂接口)*authorsolid*/publicinterfaceFactorypublicFruitfactory();packagecom.solid.factorymethod;/*工厂方法模式(具体工厂类一)*authorsolid*/publicclassAppleFactoryimplementsFactory懒汉式单例模式privatestaticAppleFactoryappleFactory=null;privateAppleFactoryOsynchronizedpublicstaticAppleFactorygetlnstance()ifappleFactory=null)appleFactory=newAppleFactoryO；returnappleFactory;生产苹果工厂方法publicFruitfactory()returnnewAppleO;packagecom.solid.factorymethod;/*工厂方法模式(具体工厂类二)*authorsolid*/publicclassPearFactoryimplementsFactory饿汉式单例模式privatestaticPearFactorypearFactory=newPearFactory();privatePearFactoryOpublicstaticPearFactorygetlnstance()returnpearFactory;生产梨方法publicFruitfactory()returnnewPear();