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C#是不行的,比如说美国的航天飞船里就有java开发的程序以上是我的愚见,其实不管那种语言,你学好了,都能找到好的工作,cacheJDBCTMRowSet
ThisEarlyAccessreleaseincludesthreeimplementationsoftheJDBCTMRowSetinterface.TheRowSetinterfaceprovidesaserializable,scrollablecontainerfortabulardatathatmayormaynotbeconnectedtoitsdatasourceviaaJDBCtechnology-enableddriver.
AdisconnectedRowSetobject,suchasaCachedRowSetobjectoraWebRowSetobject,canbethoughtofasasetofrowsthatarebeingcachedoutsideofadatasource.Becausetheyarelightweightandserializable,disconnectedrowsetscanbepassedbetweendifferentcomponentsofadistributedapplication,suchasEnterpriseJavaBeansTMcomponents.ThisisoneofthemostimportantusesforaRowSetobject.ThedatainaRowSetobjectmaybeupdatedandthenresynchronizedwiththeunderlyingtabulardatasource.
TheRowSetEarlyAccessTechnologyReleasecontainstherowsetjarfile,preliminarydocumentationandcodeexamples.AdditionaldocumentationonRowSetsiscontainedintheJDBC2.0OptionalPackageAPIspecification.TheJavaDeveloperConnection(SM)alsoprovideson-lineaccesstotheRowSettutorialchapterofthenewJavaTMseriesJDBCbook.
EarlyAccessRelease4addressesthefollowingareas:
fixedprobleminsertingrowswithnon-nullablecolumns
re-orderedcodeinwritertoallowmultiplechangestoasinglerowtobepropogatedbacktoadatasource
reader/writernowonlycloseconnectsthattheycreate.ThischangeshouldallowRowSetstobeusedwithconnectionpoolimplementationsbasedonJDBC1.xdrivers
includedmissingEchoListener.javaforexample5
ThethreeJDBCTMRowSetimplementationsinthisreleasedemonstratesomeofthemanypossibilitiesforimplementingthejavax.sql.RowSetinterface,whichispartoftheJDBC2.0OptionalPackageAPI.
Thethreeexampleimplementationsinthisreleaseare:
CachedRowSet--arowsetthatcanbeusedto
Sendasetofrowsacrossanetwork
Senddatatoathinclient
Addscrollabilityandupdatabilitytoresultsetdata
WebRowSet--anextensionofCachedRowSetthatcanbeusedtosendarowsetacrossanetworkinXMLformat
JDBCRowSet--arowsetthatcanbeusedtoencapsulateaJDBCTMdriverasaJavaBeansTMcomponent
Developerscannotredistributethebinarysoftwareincommercialproducts.Pleaseseelicensefortermsandconditions.
ThefileRelease.notesinthedownloadpackagecontainsinstructionsforinstallationandsetup.
NOTE:ThethreeRowSetimplementationscontainedinthisreleaseareexperimental,unsupportedtechnology.TheAPIsinthisreleasemaychangebeforetheybecomeanofficialpartoftheJavaTM2platform.Thesun.jdbc.rowsetpackage,whichiscontainedinthisrelease,isNOTacommittedAPIfortheJavaplatform.
首先第一点:jsp,servlet,javabean这些最基本的,嘿嘿,就算你是高手的话,在大行的企业级应用的话还是需要框架的,一个好的框架确实能构解决许多问题。 |
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