工厂模式单例模式案例实验报告

1、软件设计与体系结构实验报告课程名称软件设计与体系结构课程编号0920116实验项目名称工厂模式，单例模式案例学号班级姓名专业学生所在学院指导教师实验室名称地点实验时间实验名称：工厂模式，单例模式模式案例实验目的：工厂单例模式(ObserverPattern)是设计模式中行为模式的一种，它解决了上述具有一对多依赖关系的对象的重用问题。此模式的参与者分为两大类，一类是被观察的目标，另一类是观察该目标的观察者们。正因为该模式是基于“一对多”的关系，所以该模式一般是应用于由一个目标对象和N个观察者对象组成(当然也可以扩展为有多个目标对象，但我们现在只讨论前者)的场合。当目标对象的状态发生改变或做出某种

2、行为时，正在观察该目标对象的观察者们将自动地、连锁地作出相应的响应行为。一通过本次实验了解观察者模式的原理。并能够运用观察者模式来进行编程。实验内容1UMLJ1图工厂模式一一手机工厂MobileFactoryNokiaFactory工厂模式一一电脑产品单例模式:MazeFactoryuniqueInstance:MazeFactoryinstanceQAgenlMazeFactoryEnchantedMazeFactory2程序的源代码工厂模式一一手机工厂publicinterfaceMobilepublicvoidcall();publicinterfaceMobileFactorypubl

3、icMobileproduceMobile();return new Motorola。;public class Motorola implements Mobilepublicvoidcall()摩托罗拉手机);publicclassNokiaimplementsMobilepublicvoidcall()诺基亚手机);publicclassMotorolaFactoryimplementsMobileFactorypublicMobileproduceMobile()摩托罗拉工厂制造了);publicclassNokiaFactoryimplementsMobileFactorypubl

4、icMobileproduceMobile()诺基亚工厂制造了);returnnewNokia();publicclassClientpublicstaticvoidmain(Stringargv口)MobileFactorymf;Mobilem;mf=new MotorolaFactory();m二()；()；mf=newNokiaFactory();m二()；()；工厂模式一一电脑产品publicinterfaceCPUpublicStringgetCPU();publicclassAMDimplementsCPUpublicStringgetCPU()return Athlon XP 2

5、008+”;publicclassIntelimplementsCPUpublicStringgetCPU()return”奔腾43.2C;publicinterfaceHardDiskpublicStringgetSize();publicclassMaxtorimplementsHardDiskpublicStringgetSize()returnMaXLinePlusII200G”;publicclassWestDigitimplementsHardDiskpublicStringgetSize()returnWD2500JD250G”;publicinterfaceMainBoardp

6、ublicvoidAttach(CPUcpu)throwsException;publicclassMSI865PEimplementsMainBoardpublicvoidAttach(CPUcpu)throwsExceptionif().toString().endsWith(Intel)MSI865PE);elsethrownewException(主板MSI865PIR能配Intel的CPU);publicclassMSIK7N2GimplementsMainBoardpublicvoidAttach(CPUcpu)throwsExceptionif().toString().ends

7、With(AMD)MSIK7N2G);elsethrownewException。主板MSIK7N2能配AMDCPU);publicabstractclassComputerFactoryCPUcpu;HardDiskhd;MainBoardmb;publicvoidshow()try.toString()+(生产的电脑配置);(CPU:+();(HardDisk:+();(MainBoard:);(cpu);catch(Exceptione)publicclassIBMextendsComputerFactory旧M()cpu=newIntel();hd=newWestDigit();mb=

8、newMSI865PE();publicclassDellextendsComputerFactoryDell()cpu=newAMD();hd=newMaxtor();mb=newMSIK7N2G();public class Clientpublicstaticvoidmain(Stringargv口)IBMibm=new旧M();()；Delldell=newDell();();单例模式：packageSingleton;publicclassAgentMazeFactoryextendsMazeFactorypublicAgentMazeFactory()aAgentMazeFacto

9、ryhasbeencreated);packageSingleton;publicclassEnchantedMazeFactoryextendsMazeFactorypublicEnchantedMazeFactory()aEnchantedMazeFactoryhasbeencreated);packageSingleton;publicabstractclassMazeFactoryelse if(EnchantedMazeFactory)privatestaticMazeFactoryuniqueinstance=null;protectedMazeFactory();publicst

10、aticMazeFactoryinstance。if(uniqueInstance=null)returninstance(AgentMazeFactory);elsereturnuniqueinstance;publicstaticMazeFactoryinstance(Strings)if(uniqueInstance=null)/*if(AgentMazeFactory)uniqueInstance=newAgentMazeFactory();uniqueInstance=newEnchantedMazeFactory();*/tryuniqueInstance=(MazeFactory

11、)(s).newInstance();catch(InstantiationExceptione)FrobLeBEJavadoc卷min目ClientJ-tvftAppliC;Frg研沏FiltskJtvajreL.S.0库托承拉工厂制造了摩托罗拉手机帝基亚工厂制造了诺基非手机Problems加Javadoc降，DedaratiMi曰Console工terminated)Cliwit(1)(TtvaApplicationC：Pro-ajnFilesljavakj工B吐产的电脑配置CPU：奔慝q3.2CHardDisk:WD2SOOJD2EOGMainBcacdiHSISGSPEDull生产的电

12、脑配置CPU:AthlonXP200S4HardDisk:M&XLinPlusII200GHainEcacd:MSIK?H2GTest(2)Jarfl由CAProgramFilesJavaaAgentMazeFactoryhasbeencreatedonlyoneinstancecanbecreated个类不能预期它必须创建的对象的类2.一个类希望由其子类来指定它创建的对象优点1.通过消除应用特定的类的实例化，代码变得更灵活、更可复用2.代码只处理Product类的接口，能与任何支持该接口的ConcreteProduct类一起工作缺陷1.客户端可能只因实例化一个特定的ConcreteProduct而生成Creator类的子类。单例模式的适用性当类只能有一个实例而且客户可以从一个众所周知的访问点访问它时。当