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1 IntroductiontoJava2EnterpriseEditionPresentedbyCommunication CollaborationTechnologiesDivisionoftheChiefInformationOfficerRensselaerPolytechnicInstitute Welcome 2 MainTopics IntroductionTheGoalTheProblemTheSolutionWhatisJ2EE TheJ2EEFrameworkCaseStudies Examples 3 Introduction Enterprisestodayneedtoextendtheirreach reducetheircosts andlowertheirresponsetimes SimplifiedGuidetotheJava2Platform EnterpriseEdition SunMicrosystems Inc 4 Introduction ITmustprovide HighqualityservicesHighlyAvailableSecureScalablePowerfulservicesUsefulFlexibleExtensibleAffordable 5 TheProblem producepurchasesupportmaintainreplace Complexsoftwareisexpensiveto DifficultTasks 6 TheProblem Whynotdelegatecomponentstodifferentdepartments Departmentalsolutionsare LimitedinscopeDifficulttobeawareofenterprise widerequirementsandinitiativesDifficulttoleverageDiverseinteroperabiltystandards 7 CostandcomplexitySolution LeveragereusablesoftwarecomponentsLimitedscopeandimpactSolution Provideinterfacesthatenableenterprise wideapplicationdevelopmentDiversestandardsSolution UtilizeexistingstandardsandsoftwarecomponentsStrength LeverageddepartmentalcorecompentenciesStronglydefinedrolesandsoftwareinterfacesallowmaximumcollaboration TheSolution 8 WhatisJ2EE WhatisJava2EnterpriseEdition TheJava2platform EnterpriseEditionreducesthecostandcomplexityofdeveloping multi tierservices resultinginservicesthatcanberapidlydeployedandeasilyenhanced SimplifiedGuidetotheJava2Platform EnterpriseEdition SunMicrosystems Inc 9 WhatisJ2EE EnablingtechnologyStandardsbasedapplicationmodelAcommonarchitecturethatprovideskeycommonfunctionality SecuritySessionManagementScalability J2EEProvides 10 WhatisJ2EE ApplicationsarchitecturePartitioningofapplicationlogicImprovesmaintainabilitySimplifiessoftwareupgradesandmanagement Whatdoes multi tier mean 11 WhatisJ2EE EnablesincreasedaggregatefunctionalityReducescomponentmaintenancecostSeparationofworkloadtoimprovescalabilityandreliabilityStrongseparationpreventsvendorlock in Whatdoes multi tier mean 12 SomeHistory Twotierapplication thinclient EasytoupgradeclientExpensivetoscaleandtoaddfunctionality 13 SomeHistory Twotierapplication client server StrongscalabilityPoorupgradabilityanddifficultmanagement 14 Today ThreetierapplicationThinclientsmakeeasyupgradesCentralizedapplicationservermanagementiseasiertomanageModelallowsforhorizontalscalability 15 Today ThreetierapplicationThinclientsmakeeasyupgradesCentralizedapplicationservermanagementiseasiertomanageModelallowsforhorizontalscalability client appserver server 16 Today 17 N tierapplicationViewapplicationserverasadatastoreLeveragedataabstraction Today 18 N TierApplication 19 N TierApplication 20 N TierApplication 21 N TierApplication 22 N TierApplication 23 N TierComplexity 24 BusinessLogic 25 BusinessLogic data PROCESS OUTPUT INPUT data 26 N TierComplexity 27 N TierComplexity 28 N TierComplexity 29 N TierComplexity 30 N TierComplexity 31 N TierComplexity 32 J2EE 33 J2EE ServletsJSP XML XSLT SessionBeans EntityBeans 34 Example TheKiosk 35 Example TheKiosk article category getarticle clientview adminview 36 Clones ht
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