class A {  }  class Alpha {  private A myA = new A();  void dolt( A a ) {  a = null;  }  void tryIt() {  dolt( myA );  }  }  Which two statements are correct?()  A、 There are no instanced of A that will become eligible for garbage collection.B、 Explicitly setting myA to null marks that instance to be eligible for garbage collection.C、 Any call on tryIt() causes the private instance of A to be marked for garbage collection.D、 Private instances of A become eligible for garbage collection when instances of Alpha become eligible for garbage collection.

class A {  }  class Alpha {  private A myA = new A();  void dolt( A a ) {  a = null;  }  void tryIt() {  dolt( myA );  }  }  Which two statements are correct?()  

  • A、 There are no instanced of A that will become eligible for garbage collection.
  • B、 Explicitly setting myA to null marks that instance to be eligible for garbage collection.
  • C、 Any call on tryIt() causes the private instance of A to be marked for garbage collection.
  • D、 Private instances of A become eligible for garbage collection when instances of Alpha become eligible for garbage collection.

相关考题:

Youarecreatinganonlinecatalogapplicationthat&ens YouarecreatinganonlinecatalogapplicationthatwilldisplayproductinformationonthecompanyWebsite.TheproductdataisstoredinaSQLServer2005database.ThedataisstoredasrelationaldatabutmustbepassedtotheapplicationasanXMLdocumentbyusingFORXML.YoutestyourapplicationandnoticethatnotalloftheitemsmatchingyourqueryappearintheXMLdocument.Onlythoseproductsthathavevaluesforallelementsintheschemaappear.YouneedtomodifyyourTransact-SQLstatementsothatallproductsmatchingyourqueryappearintheXMLdocument.Whatshouldyoudo?()

Certkiller.comhasamainofficeandabranch&ens Certkiller.comhasamainofficeandabranchoffice.Certkiller.com’snetworkconsistsofasingleActiveDirectoryforest.SomeoftheserversinthenetworkrunWindowsServer2008andtherestrunWindowsserver2003.YouaretheadministratoratCertkiller.com.YouhaveinstalledActiveDirectoryDomainServices(ADDS)onacomputerthatrunsWindowsServer2008.Thebranchofficeislocatedinaphysicallyinsecureplace.IthasnotITpersonnelonsiteandtherearenoadministratorsoverthere.YouneedtosetupaRead-OnlyDomainController(RODC)ontheServerCoreinstallationcomputerinthebranchoffice.WhatshouldyoudotosetupRODConthecomputerinbranchoffice()

下面程序输出的结果为 #include"iostream.h" class A { public: A(){cout<<"CLASSA"<<endl;} ~A() {} }; class B:public A { public: B(){cout<<"CLASSB"<<endl;} ~B() {} }; void main() { A * p; p=new B; B *q; q=new B; }A.CLASS A CLASS BB.CLASS A CLASS B CLASS BC.CLASS A CLASS B CLASS A CLASS BD.CLASS A CLASS B CLASS B CLASS B

下面程序输出的结果为#include"iostream.h"class A{public:A( ){cout<<"CLASS A"<<endl;}~A( ){}};class B:public A{public:B( ){cout<<"CLASS B"<<endl;}~B( ){}};void main( ){A*p;p=new B;B *q;q=new B;}A.CLASS A CLASS BB.CLASS A CLASS B CLASS BC.CLASS A CLASS B CLASS A CLASS BD.CLASS A CLASS B CLASS B CLASS B

Class a = new Class(); Class b = new Class();if(a == b) returns true or false, why?

The IP address 192.168.100.1 belongs to which class of IP address space?() A. Class AB. Class BC. Class CD. Class D

下面程序输出的结果为 #include"iostream.h” class A { public: A(){cout<<"CLASSA"<<endl;} ~A() {} }; class B:public A { public: B(){cout<<"CLASS B"<<endl;} ~B(){} }; void main() { A*p; p=new B;A.CLASS A CLASS B CLASS B CLASS BB.CLASS A CLASS B CLASS A CLASS BC.CLASS A CLASS B CLASS BD.CLASS A CLASS B

Companycomisplanningap5595runningAIX5L&ens Companycomisplanningap5595runningAIX5L5.3LPARs.Theywouldliketodesignthesystemusingphysicalresourceswithmaximumresourceefficiency.OneLPARrequiresapeakloadof30processorsduringtheweekwithalowof1processorrequiredontheweekend.TheotherLPARrequiresonlyasingleprocessormostofthetime,butneedsatleast24processorsatthebeginningoftheweekendtofinishitsweeklyprocessinginthewindowallocated.WhichofthefollowingsolutionsismostappropriatetocontinuouslymaximizeresourceuseforthesetwoLPARs?()

下面程序输出的结果为( )。 #inClUde”iostream.h” Class A {public: A(){cout<<“CLASS A”<<endl;} ~A()<)}; class B:public A {public: B(){cout<<”CLASSB”<<endl;} ~B(){}}; void main() {A*p; p=new B; B *q; q=new B;}A.CLASS A CLASS BB.CLASS A CLASS B CLASS BC.CLASS A ClASS BD.CLASS A CLASS B CLASS A CLASS B CLASS B CLASS B

YouareresponsibleforCompany‘snetwork.You&ens YouareresponsibleforCompany‘snetwork.YouhavebeenassignedthetasktocreateanddeployastandardWindows2000Professionalimageto1,000newclientcomputersintheCompany‘smainoffice.YoulogontoaclientcomputernamedDuplicateTKbyusingthelocaladministratoraccount.YouinstallthreeWindows2000ProfessionalcompatiblesoftwarepackagesonDuplicateTK.Afterthesoftwareinstallationsaredoneyoucreateanimagewithathird-partyimagingsoftware.Youdeploytheimagetoatestclientcomputerandjointheclienttoadomain.Whenyoulogontothetestcomputerbyusingadomainuseraccount,thenewapplicationsdonotappearinthestartmenu.Youneedtobeabletore-createtheimagetoincludetheapplicationsintheStartmenuforallusers.WhatactionshouldyoutakeonDuplicateTK?()

YouareaExamSheetInc.consultantwhousesa&ens YouareaExamSheetInc.consultantwhousesaWindows2000Professionalportablecomputer.YourdomainuseraccountisamemberofthelocalAdministratorgroup.Fromyourportablecomputer,youmapadrivetoasharedfoldernamedConsultMerticsonacomputernamedServer1.YouconfigureConsultMerticstobeavailableoffline.Whenyoulogoftheportablecomputer,youreceivethefollowingerrormessage.Youneedtosuccessfullysynchronizetheofflinefiles.Whatshouldyoudo?()

对于下面( )类定义,可以通过“newJ_Class()”生成类J_Class的实例对象。A、publicclassJ_Class{publicJ_Class(void){}}B、publicclassJ_Class{}C、publicclassJ_Class{publicJ_Class(Strings){}}D、publicclassJ_Class{publicvoidJ_Class(){}publicJ_Class(Strings){}

Alloftheclientcomputersinyourcompany’s&ens Alloftheclientcomputersinyourcompany’snetworkareWindows2000portablecomputers.AusernamedMariastoresSalesfilesinherMyDocumentsfolder.Sheusesthesefileswhenshetravels.Mariainformsyouthatwhenshetakesherportablecomputertotradeshows,shecanaccesssomeoftheSalesfilesbutnotallofthem.Whenherportablecomputerisconnectedtothenetworkattheoffice,shecanaccessallofthefiles.YouneedtoenableMariatoaccessallofthefilesinherMyDocumentsfolderwhensheisworkingremotely.Whatshouldyoudo?()

YouareaWindowsServer2008systemsadministrator&ens YouareaWindowsServer2008systemsadministratorresponsibleforprovidingaccesstoalargevolumeofvideofilestoregisteredusersofyourorganization??spublicWebsite.Allthevideofilesarelocated withintheD:\Public\Videosfolder.Contentproducersoftencreateandmodifythesevideos.Recently,usershavecomplainedthattheyareexperiencingpoorperformancewhenaccessingvideosduringbusytimes.Duringtheseimages,theWindowsMediaServicesserverthathoststhecontentisexperiencinghighCPUandnetworkbandwidthuse.Youwanttominimizetheadministrativetimeandeffortrequiredtoincreaseperformance.Whichofthefollowingactionsshouldyoutaketoresolvetheproblem?()

Which statement is NOT true concerning the stowage of class 1 explosives ________.A.Class 1.1 explosives may be stowed with class 9 dangerous substancesB.Class 1.4 explosives must be“separated from”a stow of class 5.1 oxidizing materialsC.Class 1.4 explosives may not be stowed in the same hold with class 6.1 poisonsD.Class 1.4 explosives must be“separated from”a stow of class 8 corrosive materials

GPRS手机类型可分为()。A、CLASS AB、CLASS BC、CLASS CD、CLASS D

Which class of Cisco access points operate under IEEE 802.3af power?()A、Class AB、Class 1C、Class 2D、Class 3E、Class 4

In which two cases does the compiler supply a default constructor for class A?()  A、 class A{}B、 class A { public A(){} }C、 class A { public A(int x){} }D、 class Z {} class A extends Z { void A(){} }

Which declaration prevents creating a subclass of an outer class?()A、 Static class FooBar{}B、 Private class FooBar{}C、 Abstract public class FooBar{}D、 Final public class FooBar{}E、 Final abstract class FooBar{}

在MCDU电子状态页报告里能查看故障()A、Class1Class3B、Class2Class3C、Class1Class2D、Class1,Class2Class3

根据栅格系统的标准用法,错误的是()A、div class="container"brdiv class="row" B、div class="row"brdiv class="col-md-1" C、div class="row"brdiv class="container" D、div class="col-md-1"brdiv class= "row"

关于嵌套列的用法,错误的是()A、div class=“row”brdiv class=“col-sm-1”B、div class=“col-sm-1”brdiv class=“row”br C、div class=“row”brdiv class=“container”brdiv class=“col-xs-1”br D、div class=“container”brdiv class=“row”brdiv class=“col-xs-1”

Which of the following class addresses is reserved for multicast?()A、 Class AB、 Class BC、 Class CD、 Class D

Which of the following class networks contains 65,534 hosts?()A、Class AB、Class BC、Class CD、Class D

What produces a compiler error?()  A、 class A { public A(int x) {} }B、 class A {} class B extends A { B() {} }C、 class A { A() {} } class B { public B() {} }D、 class Z { public Z(int) {} } class A extends Z {}

单选题猪细小病毒的主要免疫原性蛋白是()AVP1BVP2CVP3DNS2ENS3

单选题下列处方中常见的外文缩写,其含义是“立即”的是( )ADos.BSol.CSt.Dss.ENS

单选题What produces a compiler error?()A class A { public A(int x) {} }B class A {} class B extends A { B() {} }C class A { A() {} } class B { public B() {} }D class Z { public Z(int) {} } class A extends Z {}