publicclassX(2.publicobjectm(){3.objecto=newfloat(3.14F);4.object[]oa=newobject[1];5.oa[0]=o;6.o=null;7.returnoa[0];8.}9.}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?()A.Justafterline5B.Justafterline6C.Justafterline7（thatis，asthemethod

题目
publicclassX(2.publicobjectm(){3.objecto=newfloat(3.14F);4.object[]oa=newobject[1];5.oa[0]=o;6.o=null;7.returnoa[0];8.}9.}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?()

A.Justafterline5

B.Justafterline6

C.Justafterline7（thatis，asthemethodreturns）

D.Neverinthismethod.

相似考题

1.表达式LEN(SPACE(O))的运算结果是( )A、NULL.B、1C、0D、″″E、2

2.publicclassX{2.publicobjectm(){3.objecto=newfloat(3.14F);4.object[]oa=newobject[1];5.oa[0]=o;6.o=null;7.oa[0]=null;10.returno;9.}10.}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?()A.Justafterline5.B.Justafterline6.C.Justafterline7.D.Justafterline8（thatis，asthemethodreturns）.

3.publicclassArrayTest{2.publicstaticvoidmain(String[]args){3.floatf1[],f2[];4.f1=newfloat[10];5.f2=f1;6.System.out.printIn(f2[0]=”＋f2[0]);7.}8.}Whatistheresult?()A.Itprintsf2[0]=0.0B.Itprintsf2[0]=NaNC.Anerroratline5causescompiletofail.D.Anerroratline6causescompiletofail.E.Anerroratline6causesanexceptionatruntime.

4.1.public class GC{2.private Objec to；3.private void doSomethingElse（Object obj）{o=obj；}4.public void doSomething（）{5.Object o=new Object（）；6.doSomethingElse（o）；7.o=new Object（）；8.doSomethingElse（null）；9.o=null；10.}11.}When the doSomething method is called，after which line does the Object created in line 5 become available for garbage collection？（）A.Line5B.Line6C.Line7D.Line8E.Line9F.Line10

更多“publicclassX(2.publicobjectm(){3.objecto=newfloat(3.14F);4.object[]oa=newobject[1];5.oa[0]=o;6.o=null;7.returnoa[0];8.}9.}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?() ”相关问题

  • 第1题：

    floatf[][][]=newfloat[3][][];floatf0=1.0f;float[][]farray=newfloat[1][1];Whatisvalid?()

    A.f[0]=f0；

    B.f[0]=farray；

    C.f[0]=farray[0]；

    D.f[0]=farray[0][0]；


    参考答案：B

  • 第2题：

    publicclassX{publicobjectm(){objecto=newfloat(3.14F);objectoa=newobject[1];oa[0]=o;o=null;oa[0]=null;returno;}}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?()

    A.Justafterline5.

    B.Justafterline6.

    C.Justafterline7.

    D.Justafterline8（thatis，asthemethodreturns）.


    参考答案：C

  • 第3题：

    有以下程序include main (){ printf("%d\n", NULL); }A.0B.1C.－1D.NULL没定义,出错

    有以下程序 #include ＜stdio .h＞ main () { printf("%d\n", NULL); }

    A．0

    B．1

    C．-1

    D．NULL没定义，出错


    正确答案：A
    解析：在C语言中NULL的ASCII码值为0，而输出函数要求以整形格式输出，故最后的输出数为0。所以，4个选项中选项A符合题意。

  • 第4题：

    publicObjectm(){11.Objecto=newFloat(3.14F);12.Object[]oa=newObject[1];13.oa[0]=o;14.o=null;15.returnoa[0];16.}WhenistheFloatobject,createdinline11,eligibleforgarbagecollection?()

    A.Justafterline13.

    B.Justafterline14.

    C.Neverinthismethod.

    D.Justafterline15（thatis，asthemethodreturns）.


    参考答案：C
    ThecorrectanswertothisquestionisC.Theobjectisnevergarbagecollectedsimplybecausethemethodreturnsit.Thinkaboutit,themessagethatreceivestheobjectmightdependonitsoitmustbesurethattheobjectreceivedbythemethodwontbegarbagecollected.Onlyinthissituationalocalobjectwontbeeligibleforgarbagecollection.Otherwise,alocalobjectiseligibleforgarbagecollectionassoonasthemethodends.

  • 第5题：

    publicclassX{publicobjectm(){objecto=newfloat(3.14F);objectoa=newobject[1];oa[0]=o;o=null;returnoa[0];}}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?()

    A.Justafterline5

    B.Justafterline6

    C.Justafterline7（thatis，asthemethodreturns）

    D.Neverinthismethod.


    参考答案：D

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