单项选择题 10.publicclassHello{11.Stringtitle；12.intvalue；13.publicHello（）{14.title+=World”；15.}16.publicHello（intvalue）{17.this.value=value；18.title=Hello”；19.Hello（）；20.}21.}and：30.Helloc=newHello（5）；31.System.out.println（c.title）；Whatistheresult？（）A.HelloB.HelloWorldC.Compilationfails.D.HelloWorld5E.Thecoderunswithnooutput.F.Anexceptionisthrownatruntime.

单项选择题 classClassA{publicintnumberOfinstances；protectedClassA（intnumberOfinstances）{this.numberOflnstances=numberOfinstances；}}publicclassExtendedAextendsClassA{privateExtendedA（intnumberOfinstances）{super（numberOflnstances）；}publicstaticvoidmain（String[]args）{ExtendedAext=newExtendedA（420）；System.out.print（ext.numberOflnstances）；}}Whichistrue？（）A.420istheoutput.B.Anexceptionisthrownatruntime.C.Allconstructorsmustbedeclaredpublic.D.ConstructorsCANNOTusetheprivatemodifier.E.ConstructorsCANNOTusetheprotectedmodifier.

单项选择题 publicclassBase{publicstaticfinalStringFOO=foo”；publicstaticvoidmain（String[]args）{Baseb=newBase（）；Subs=newSub（）；System.out.print（Base.FOO）；System.out.print（Sub.FOO）；System.out.print（b.FOO）；System.out.print（s.FOO）；System.out.print（（（Base）s）.FOO）；}}classSubextendsBase{publicstaticfinalStringFOO=bar；}Whatistheresult？（）A.foofoofoofoofooB.foobarfoobarbarC.foobarfoofoofooD.foobarfoobarfooE.barbarbarbarbarF.foofoofoobarbarG.foofoofoobarfoo

单项选择题 classDemoApp{publicstaticvoidmain（String[]args）{intx=5；inty=＋＋x＋x＋＋；System.out.println（y=”＋y＋”，x=”＋x）；}}以上程序运行后的输出结果是哪项？（）

单项选择题 Youarebuildingyourownlayoutmechanismbyincludingdynamiccontentforthepage’sheaderandfootersections.Thefooterisalwaysstatic，buttheheadergeneratesthe<title>tagthatrequiresthepagenametobespecifieddynamicallywhentheheaderisimported.WhichJSPcodesnippetperformstheimportoftheheadercontent？（）A.<jsp：includepage=’/WEB-INF/jsp/header.jsp’><jsp：paramname=’pageName’value=’WelcomePage’/></jsp：include>B.<jsp：importpage=’/WEB-INF/jsp/header.jsp’><jsp：paramname=’pageName’value=’WelcomePage’/></jsp：import>C.<jsp：includepage=’/WEB-INF/jsp/header.jsp’><jsp：attributename=’pageName’value=’WelcomePage’/>.</jsp：include>D.<jsp：importpage=’/WEB-INF/jsp/header.jsp’>.<jsp：attributename=’pageName’value=’WelcomePage’/>.</jsp：import>

单项选择题 WhichisabenefitofprecompilingaJSPpage？（）

单项选择题 TheJSPdeveloperwantsacommenttobevisibleinthefinaloutputtothebrowser.WhichcommentstyleneedstobeusedinaJSPpage？（）

单项选择题 WhichensuresthataJSPresponseisoftype'text／plain'？（）

单项选择题 WhichHttpSessionmethodstoresanobjectinasession？（）

单项选择题 ACompany.comdeveloperisdesigningamulti-tierwebapplicationanddiscoversaneedtohidethedetailsofestablishingandmaintainingremotecommunicationsfromtheclient.Inaddition，becausethebusinessandresourcetiersaredistributed，theapplicationneedstominimizetheinter-tiernetworktrafficrelatedtoservicingclientrequests.Whichdesignpatterns，workingtogether，addresstheseissues？（）A.FrontControllerandTransferObjectB.FrontControllerandServiceLocatorC.BusinessDelegateandTransferObjectD.BusinessdelegateandInterceptingFilterE.Model-View-ControllerandInterceptingFilter

单项选择题 Whichinterfacemustasessionattributeimplementifitneedstobenotifiedwhenawebcontainerpersistsasession？（）

单项选择题 AwebapplicationusestheHttpSessionmechanismtodetermineifauseris"loggedin."Whenausersuppliesavalidusernameandpassword，anHttpSessioniscreatedforthatuser.Theuserhasaccesstotheapplicationforonly15minutesafterloggingin.Thecodemustdeterminehowlongtheuserhasbeenloggedin，andifthistimeisgreaterthan15minutes，mustdestroytheHttpSession.Whichmethodin HttpSessionisusedtoaccomplishthis？（）A.GetcreationtimeB.InvalidateafterC.GetlastaccessedtimeD.Getmaxinactiveinterval

单项选择题 GivenanHttpServletRequestrequestandanHttpServletResponseresponse：41.HttpSessionsession=null；42.//insertcodehere43.if（session==null）{44.//dosomethingifsessiondoesnotexist45.}else{46.//dosomethingifsessionexists47.}Toimplementthedesignintent，whichstatementmustbeinsertedatline42？（）A.session=response.getSession（）；B.session=request.getSession（）；C.session=request.getSession（true）；D.session=request.getSession（false）；E.session=request.getSession（"jsessionid"）；

单项选择题 WhichmethodmustbeusedtoencodeaURLpassedasanargumenttoHttpServletResponse.sendRedirectwhenusingURLrewritingforsessiontracking？（）

单项选择题 AJSPpageneedstoperformsomeoperationsbeforeservicingthefirstrequest.Wherecanthisbedone？（）

单项选择题 Youarebuildingawebapplicationwithaschedulingcomponent.OntheJSP，youneedtoshowthecurrentdate，thedateofthepreviousweek，andthedateofthenextweek.Tohelpyoupresentthisinformation，youhavecreatedthefollowingELfunctionsinthe’d’namespace：name：curDate；signature：java.util.DatecurrentDate（）name：addWeek；signature：java.util.DateaddWeek（java.util.Date，int）name：dateString；signature：java.util.StringgetDateString（java.util.Date）WhichELcodesnippetwillgeneratethestringforthepreviousweek？A.${d：dateString（addWeek（curDate（），-1））}B.${d：dateString[addWeek[curDate[]，-1]]}C.${d：dateString[d：addWeek[d：curDate[]，-1]]}D.${d：dateString（d：addWeek（d：curDate（），-1））}

单项选择题 钱掌柜的买家级别设置不包含以下哪几个等级?()

单项选择题 抵价券的面值没有以下哪种?()

单项选择题 商业信息传播的维度中没有以下哪个?()

单项选择题 支付宝是淘宝唯一的在线付款方式，安全交易的手段不包含以下哪个?()