计算机 java 外文翻译 外文文献 英文文献.docx
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计算机 java 外文翻译 外文文献 英文文献.docx
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计算机java外文翻译外文文献英文文献
英文原文:
Title:
BusinessApplicationsofJava.Author:
Erbschloe,Michael,BusinessApplicationsofJava--ResearchStartersBusiness,2008
DataBase:
ResearchStarters-Business
BusinessApplicationsofJava
ThisarticleexaminesthegrowinguseofJavatechnologyinbusinessapplications.ThehistoryofJavaisbrieflyreviewedalongwiththeimpactofopenstandardsonthegrowthoftheWorldWideWeb.KeycomponentsandconceptsoftheJavaprogramminglanguageareexplainedincludingtheJavaVirtualMachine.ExamplesofhowJavaisbeingusedbye-commerceleadersisprovidedalongwithanexplanationofhowJavaisusedtodevelopdatawarehousing,datamining,andindustrialautomationapplications.TheconceptofmetadatamodelingandtheuseofExtendableMarkupLanguage(XML)arealsoexplained.
KeywordsApplicationProgrammingInterfaces(API's);EnterpriseJavaBeans(EJB);ExtendableMarkupLanguage(XML);HyperTextMarkupLanguage(HTML);HyperTextTransferProtocol(HTTP);JavaAuthenticationandAuthorizationService(JAAS);JavaCryptographyArchitecture(JCA);JavaCryptographyExtension(JCE);JavaProgrammingLanguage;JavaVirtualMachine(JVM);Java2Platform,EnterpriseEdition(J2EE);Metadata
BusinessInformationSystems>BusinessApplicationsofJava
Overview
Openstandardshavedriventhee-businessrevolution.Networkingprotocolstandards,suchasTransmissionControlProtocol/InternetProtocol(TCP/IP),HyperTextTransferProtocol(HTTP),andtheHyperTextMarkupLanguage(HTML)WebstandardshaveenableduniversalcommunicationviatheInternetandtheWorldWideWeb.Ase-businesscontinuestodevelop,variouscomputingtechnologieshelptodriveitsevolution.
TheJavaprogramminglanguageandplatformhaveemergedasmajortechnologiesforperforminge-businessfunctions.Javaprogrammingstandardshaveenabledportabilityofapplicationsandthereuseofapplicationcomponentsacrosscomputingplatforms.SunMicrosystems'JavaCommunityProcesscontinuestobeastrongbaseforthegrowthoftheJavainfrastructureandlanguagestandards.Thisgrowthofopenstandardscreatesnewopportunitiesfordesignersanddevelopersofapplicationsandservices(Smith,2001).
CreationofJavaTechnology
Javatechnologywascreatedasacomputerprogrammingtoolinasmall,secreteffortcalled"theGreenProject"atSunMicrosystemsin1991.TheGreenTeam,fullystaffedat13peopleandledbyJamesGosling,lockedthemselvesawayinananonymousofficeonSandHillRoadinMenloPark,cutofffromallregularcommunicationswithSun,andworkedaroundtheclockfor18months.Theirinitialconclusionwasthatatleastonesignificanttrendwouldbetheconvergenceofdigitallycontrolledconsumerdevicesandcomputers.Adevice-independentprogramminglanguagecode-named"Oak"wastheresult.
Todemonstratehowthisnewlanguagecouldpowerthefutureofdigitaldevices,theGreenTeamdevelopedaninteractive,handheldhome-entertainmentdevicecontrollertargetedatthedigitalcabletelevisionindustry.Buttheideawastoofaraheadofitstime,andthedigitalcabletelevisionindustrywasn'treadyfortheleapforwardthatJavatechnologyofferedthem.Asitturnsout,theInternetwasreadyforJavatechnology,andjustintimeforitsinitialpublicintroductionin1995,theteamwasabletoannouncethattheNetscapeNavigatorInternetbrowserwouldincorporateJavatechnology("LearnaboutJava,"2007).
ApplicationsofJava
JavausesmanyfamiliarprogrammingconceptsandconstructsandallowsportabilitybyprovidingacommoninterfacethroughanexternalJavaVirtualMachine(JVM).Avirtualmachineisaself-containedoperatingenvironment,createdbyasoftwarelayerthatbehavesasifitwereaseparatecomputer.Benefitsofcreatingvirtualmachinesincludebetterexploitationofpowerfulcomputingresourcesandisolationofapplicationstopreventcross-corruptionandimprovesecurity(Matlis,2006).
TheJVMallowscomputingdeviceswithlimitedprocessorsormemorytohandlemoreadvancedapplicationsbycallingupsoftwareinstructionsinsidetheJVMtoperformmostofthework.ThisalsoreducesthesizeandcomplexityofJavaapplicationsbecausemanyofthecorefunctionsandprocessinginstructionswerebuiltintotheJVM.Asaresult,softwaredevelopersnolongerneedtore-createthesameapplicationforeveryoperatingsystem.Javaalsoprovidessecuritybyinstructingtheapplicationtointeractwiththevirtualmachine,whichservedasabarrierbetweenapplicationsandthecoresystem,effectivelyprotectingsystemsfrommaliciouscode.
Amongotherthings,Javaistailor-madeforthegrowingInternetbecauseitmakesiteasytodevelopnew,dynamicapplicationsthatcouldmakethemostoftheInternet'spowerandcapabilities.Javaisnowanopenstandard,meaningthatnosingleentitycontrolsitsdevelopme
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