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The customary way of learning Nu shu has died out.A.真B.假C.NOT GIVEN

The customary way of learning Nu shu has died out.

A.真

B.假

C.NOT GIVEN

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更多“The customary way of learning …”相关的问题

第1题

Given:classClassA{}classClassBextendsClassA{}classClassCextendsClassA{}and:ClassAp0=newCla
ssA();ClassBp1=newClassB();ClassCp2=newClassC();ClassAp3=newClassB();ClassAp4=newClassC();Whichthreearevalid?()

A.p0=p1;

B.p1=p2;

C.p2=p4;

D.p2=(ClassC)p1;

E.p1=(ClassB)p3;

F.p2=(ClassC)p4;

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第2题

现有:classClassA{}classClassBextendsClassA{)classClassCextendsClassA{)以及:ClassAp0=newClassA();ClassBpl=newClassB();ClassCp2=newClassC();ClassAp3=newClassB();ClassAp4=newClassC();下列哪些是正确的?()

A.p0=pl;

B.p1=p2;

C.p2=p4;

D.p2=(ClassC)pl;

E.p1=(ClassB)p3;

F.p2=(Classc)p4;

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第3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.

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第4题

packagegeometry;publicclassHypotenuse{publicInnerTriangleit=newInnerTriangle();classInnerTriangle{publicintbase;publicintheight;}}Whichistrueabouttheclassofanobjectthatcanreferencethevariablebase?()

A.Itcanbeanyclass.

B.Noclasshasaccesstobase.

C.Theclassmustbelongtothegeometrypackage.

D.TheclassmustbeasubclassoftheclassHypotenuse.

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第5题

publicclassTarget{2.privateinti=0;3.publicintaddOne(){4.return++i;5.}6.}And:1.publicclas
1.publicclassTarget{2.privateinti=0;3.publicintaddOne(){4.return++i;5.}6.}And:1.publicclassClient{2.publicstaticvoidmain(String[]args){3.System.out.println(newTarget().addOne());4.}5.}WhichchangecanyoumaketoTargetwithoutaffectingClient?()

A.Line4ofclassTargetcanbechangedtoreturni++;

B.Line2ofclassTargetcanbechangedtoprivateinti=1;

C.Line3ofclassTargetcanbechangedtoprivateintaddOne(){

D.Line2ofclassTargetcanbechangedtoprivateIntegeri=0;

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第6题

packagetest;classTarget{publicStringname=hello”;}Whatcandirectlyaccessandchangethevalueofthevariablename?()

A.anyclass

B.onlytheTargetclass

C.anyclassinthetestpackage

D.anyclassthatextendsTarget

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第7题

fooandbararepublicreferencesavailabletomanyotherthreads.fooreferstoaThreadandbarisanObject
.Thethreadfooiscurrentlyexecutingbar.wait().Fromanotherthread,whichstatementisthemostreliablewaytoensuethatfoowillstopexecutingwait()?

A.foo.notify();

B.bar.notify();

C.foo.notifyAll();

D.Thread.notify();

E.bar.notiFYAll();

F.Object.notify();

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第8题

voidwaitForSignal(){Objectobj=newObject();synchronized(Thread.currentThread()){obj.wait();obj.notify();}}Whichistrue?()

A.ThiscodemaythrowanInterruptedException.

B.ThiscodemaythrowanIllegalStateException.

C.ThiscodemaythrowaTimeoutExceptionaftertenminutes.

D.Thiscodewillnotcompileunless“obj.wait()”isreplacedwith“((Thread)obj).wait()”.

E.Reversingtheorderofobj.wait()andobj.notify()maycausethismethodtocompletenormally.

F.Acalltonotify()ornotifyAll()fromanotherthreadmaycausethismethodtocompletenormally.

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第9题

classComputationextendsThread{privateintnu
classComputationextendsThread{

privateintnum;

privatebooleanisComplete;

privateintresult;

publicComputation(intnum){this.num=num;}

publicsynchronizedvoidrun(){

result=num*2;

isComplete=true;

notify();

}

publicsynchronizedintgetResult(){

while(!isComplete){

try{

wait();

}catch(InterruptedExceptione){}

}

returnresult;

}

publicstaticvoidmain(String[]args){

Computation[]computations=newComputation[4];

for(inti=0;i<computations.length;i++){

computations[i]=newComputation(i);

computations[i].start();

}

for(Computationc:computations)

System.out.print(c.getResult()+);

}

}

Whatistheresult?()

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第10题

publicclassTransfers{publicstaticvoidmain(
publicclassTransfers{

publicstaticvoidmain(String[]args)throwsException{

Recordr1=newRecord();

Recordr2=newRecord();

doTransfer(r1,r2,5);

doTransfer(r2,r1,2);

doTransfer(r1,r2,1);

//printtheresult

System.out.println(”rl=+r1.get()+,r2=”+r2.get());

}

privatestaticvoiddoTransfer(

finalRecorda,finalRecordb,finalintamount){

Threadt=newThread(){

publicvoidrun(){

newClerk().transfer(a,b,amount);

}

};

t.start();

}

}

classClerk{

publicsynchronizedvoidtransfer(Recorda,Recordb,intamount){

synchronized(a){

synchronized(b){

a.add(-amount);

b.add(amount);

}

}

}

}

classRecord{

intnum=10;

publicintget(){returnnum;}

publicvoidadd(intn){num=num+n;}

}

IfTransfers.main()isrun,whichthreearetrue?()

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