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1、何nz缎九茅科信学院英文参考文献原文复印件及译文业：计算机科学与技术名:号：110212203指导教师：黄伟建完成日期2015年4月原文:ParsingJavaAbstractionoftheDifferenceBetweenClassesandInterfacesInJavalanguage,abstractscale-upandwithsupportclassabstractiondefinitionoftwomechanisms-Becauseofthesetwokindsofmechanismofexistence,justgivesJavapowerfulobject-orie
2、ntedskills.Abstractscale-upandwithbetweenclassabstractiondefinitionforsupporthasgreatsimilarities,eveninterchangeable,somanydevelopersintolinenonabstractclassdefinitionforabstractscale-upanditisbecomingmorecasualwithchoice.Infact,bothbetweenstillhastheverybigdifference,fortheirchoiceevenreflected
3、inproblemdomainessenceofunderstanding,todesigntheintentionsoftheunderstandcorrectlyandreasonable.Thispaperwillforthedifferenceanalysis,tryingtogiveadeveloperwithachoicebetweenthemarebased.UnderstandclassabstractionAbstractclassandinterfaceinJavalanguageisusedforabstractclasses(inthisarticlenonabs
4、tractclassnotfromabstractscale-uptranslation,itrepresentsanabstractbody,andabstractscale-upforJavalanguageusedtodefineclassabstractioninoneway,pleasereadersdistinguish)defined,thenwhataretheabstractclasses,useabstractclassesforusanygood?Inobject-orientedconcept,weknowallobjectsisthroughclasstodes
5、cribe,butinturnnotsuch.Notallclassesareusedtodescribeobject,ifaclassdoesnotcontainenoughinformationtoportrayaconcreteobject,thisclassisabstractclasses.Abstractclassesareoftenusedtocharacterizationofproblemfieldinouranalysis,designthattheabstractconcepts,istotheserieswilllookdifferent,butessential
6、lythesameexactconceptionofabstraction.Forexample:ifwecarryoutagraphicaleditingsoftwaredevelopment,willfindproblemdomainexistsround,trianglesosomespecificconcept,theyaredifferent,buttheyallbelongtoshapesuchaconcept,shapethisconceptinproblemdomainisnotexist,itisanabstractconcept.Preciselybecausethe
7、abstractconceptsinproblemfieldnocorrespondingspecificconcept,sotocharacterizationabstractconceptsnonabstractclasscannotbeinstantiated.Inanobject-orientedfield,mainlyusedforclassabstractiontypeshidden.Wecanconstructafix
