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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）.
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更多 “ 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）. ” 相关考题
考题
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
考题
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）.
考题
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，asthemethodreturns）D.Neverinthismethod.
考题
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）.
考题
publicclassX{publicobjectm(){objecto=newfloat(3.14F);objectoa=newobject[1];oa[0]=o;o=null;returnoa[0];}}Whenisthefloatobjectcreatedinline3,eligibleforgarbagecollection?()
A.Justafterline5B.Justafterline6C.Justafterline7（thatis，asthemethodreturns）D.Neverinthismethod.
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return o; O是代表什么呢?如果不返回O 会怎么样?
friendostreamoperator(ostreamVectori=0;iv.size;i++){ov.data[i]'';}returno;}
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下面的程序会抛出什么异常类型？ public class Test { public static void main（String[] args) { Object o = null; System.out.println（o); } }A．ArithmeticExceptionB．ArrayIndexOutOfBoundsExceptionC．StringIndexOutOfBoundsExceptionD．没有异常
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下面的程序会抛出什么异常类型？ public class Test { public static void main（String[] args) { Object o = null; System.out.println（o.toString（)); } }A．ArrayIndexOutOfBoundsExceptionB．StringIndexOutOfBoundsExceptionC．ClassCastExceptionD．NullPointerException
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