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1、附录AHistoryDuke,theJavamascotJamesGosling,MikeSheridan,andPatrickNaughtoninitiatedtheJavalanguageprojectinJune1991.Javawasoriginallydesignedforinteractivetelevision,butitwastooadvancedforthedigitalcabletelevisionindustryatthetime.ThelanguagewasinitiallycalledOakafteranoakt
2、reethatstoodoutsideGosling'soffice;itwentbythenameGreenlater,andwaslaterrenamedJava,fromalistofrandomwords.GoslingaimedtoimplementavirtualmachineandalanguagethathadafamiliarC/C++styleofnotation.SunMicrosystemsreleasedthefirstpublicimplementationasJava1.0in1995.Itpromised"
3、WriteOnce,RunAnywhere"(WORA),providingno-costrun-timesonpopularplatforms.Fairlysecureandfeaturingconfigurablesecurity,itallowednetwork-andfile-accessrestrictions.MajorwebbrowserssoonincorporatedtheabilitytorunJavaappletswithinwebpages,andJavaquicklybecamepopular.Withthead
4、ventofJava2(releasedinitiallyasJ2SE1.2inDecember1998–1999),newversionshadmultipleconfigurationsbuiltfordifferenttypesofplatforms.Forexample,J2EEtargetedenterpriseapplicationsandthegreatlystripped-downversionJ2MEformobileapplications(MobileJava).J2SEdesignatedtheStandardEd
5、ition.In2006,formarketingpurposes,SunrenamednewJ2versionsasJavaEE,JavaME,andJavaSE,respectively.In1997,SunMicrosystemsapproachedtheISO/IECJTC1standardsbodyandlatertheEcmaInternationaltoformalizeJava,butitsoonwithdrewfromtheprocess.Javaremainsadefactostandard,controlledthr
6、oughtheJavaCommunityProcess.Atonetime,SunmademostofitsJavaimplementationsavailablewithoutcharge,despitetheirproprietarysoftwarestatus.SungeneratedrevenuefromJavathroughthesellingoflicensesforspecializedproductssuchastheJavaEnterpriseSystem.SundistinguishesbetweenitsSoftwa
7、reDevelopmentKit(SDK)andRuntimeEnvironment(JRE)(asubsetoftheSDK);theprimarydistinctioninvolvestheJRE'slackofthecompiler,utilityprograms,andheaderfiles.OnNovember13,2006,SunreleasedmuchofJavaasopensourcesoftwareunderthetermsoftheGNUGeneralPublicLicense(GPL).OnMay8,2007,Sun
8、finishedtheprocess,makingallofJava'scorecodeavailableunderfreesoftware/open-sourcedistributionte