overview-of-java-ee

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1、BuildingtheEnterpriseTheToolsofJavaEnterpriseEdition©2003-2007DevelopIntelligenceLLCPresentationTopicsInthispresentation,wewilldiscuss:OverviewofJavaEEJavaEEPlatformJavaEEDevelopment©2003-2007DevelopIntelligenceObjectivesWhenwearedone,youshouldbeableto:DescribehowJavaEEandJavaSEfi

2、ttogetherList3technologiesfoundinJavaEEDescribethebasicdevelopmentlifecycleforaJavaEEapplication©2003-2007DevelopIntelligenceOverviewofJavaEEAHigh-levelOverview©2003-2007DevelopIntelligenceLLCWhatisJavaEE?Acommunity-definedextensiontotheJavaSEplatformSeparatecontrollingspecificati

3、onDefinedincontextofextendingJavaSEtoenterpriseAnenterpriseinformationsystemsplatformEnablesthedevelopmentofJava-basedmiddle-tierapplicationsrequiring“ility”characteristicsExtendsWrite-Once-Run-Anywhere(WORA)tomiddlewareAstandardarchitecturedefiningAnapplicationprogrammingmodelAna

4、pplicationexecutionplatform©2003-2007DevelopIntelligenceHistoryofJavaEEJavaEEwasnotan“intent”oftheoriginalJavadesignItwasmoreofaside-effectoftheJava-webmergerClient-sideweb-basedJavalostitslusterandpositioningtothingslikeFlashThingslikeWORA,threading,networking,andsecurityweredesi

5、rablecharacteristicsontheserver-sideBut,Javadidn’thaveaformalserver-side“platform”JavaEEwasmore“evolutionary”thanrevolutionaryInitiallyaddressedweb-applicationsQuicklyenhancedtoaddress“middleware”FurtherenhancedtosupportWebservicesandSOA©2003-2007DevelopIntelligenceMotivationsforJ

6、avaEEProvideaneasytouseframeworktobuildmiddle-wareapplicationsthat:Enablesdeveloperstofocusonbusinesslogicinsteadof“integration”logicCreatesmiddlewareservertransparencyRemovescomplexitiesoflarge-scaledistributedapplicationsProvideamanagedexecutionenvironmentthat:Addresses“ility”ch

7、aracteristicsAllowssecureandprotectedside-by-sidedeploymentsOfferscommon“services”©2003-2007DevelopIntelligenceIndustrySupportOriginally,JavaEEwasdevelopedandmaintainedbySunToday,JavaEEisgovernedbytheJavaCommunityProcess(JCP)JavaEEitsownJavaSpecificationRequest(JSR-244)Developedby

8、anexpertgrouprepresentedbycompani