publicclassA{2.voidA(){3.System.out.println(ClassA”);4.}5.publicstaticvoidmain(String[]args){6.newA();7.}8.}Whatistheresult?() A.ClassAB.Compilationfails.C.Anexceptionisthrownatline2.D.Anexceptionisthrownatline6.E.Thecodeexecuteswithnooutput.
publicclassA{2.voidA(){3.System.out.println(ClassA”);4.}5.publicstaticvoidmain(String[]args){6.newA();7.}8.}Whatistheresult?()
A.ClassA
B.Compilationfails.
C.Anexceptionisthrownatline2.
D.Anexceptionisthrownatline6.
E.Thecodeexecuteswithnooutput.
相关考题：
class A{public int getNumber(int a){return a+1;}}class B extends A{public int getNumber(int a, char c){return a+2;}public static void main(String[] args){B b=new B();System.out.println(b.getNumber(0));}}what is the result?()A.compilation succeeds and 1 is printedB.compilation succeeds and 2 is printedC.compilation succeeds and 3 is printedD.An error at this program cause compilation to fail
下列语句输出结果为 。public class A{public static void main(String[]args){byte b=0xa;System.out.println(b);}}() A.0xaB.aC.1D.10
publicstaticvoidmain（String[]args）{try{args=null；args[0]=test”；System.out.println（args[0]）；}catch（Exceptionex）{System.out.println（”Exception”）；}catch（NullPointerExceptionnpe）{System.out.println（”NullPointerException”）；}}Whatistheresult？（）A.testB.ExceptionC.Compilationfails.D.NullPointerException
interfaceTestA{StringtoString();}2.publicclassTest{3.publicstaticvoidmain(String[]args){4.System.out.println(newTestA(){5.publicStringtoString(){returntest”;}6.}7.}8.}Whatistheresult?() A.testB.nullC.Anexceptionisthrownatruntime.D.Compilationfailsbecauseofanerrorinline1.E.Compilationfailsbecauseofanerrorinline4.F.Compilationfailsbecauseofanerrorinline5.
1.classA{2.publicStringtoString（）{3.return4”；4.}5.}6.classBextendsA{7.publicStringtoString（）{8.returnsuper.toString（）+3”；9.}10.}11.publicclassTest{12.publicstaticvoidmain（String[]args）{13.System.out.printIn（newB（））；14.}15.}Whatistheresult？（）A.Compilationsucceedsand4isprinted.B.Compilationsucceedsand43isprinted.C.Anerroronline9causescompilationtofail.D.Anerroronline14causescompilationtofail.E.Compilationsucceedsbutanexceptionisthrownatline9.
publicclassFooimplementsRunnable(3.publicvoidrun(Threadt){4.system.out.printIn(Running.”);5.}6.publicstaticvoidmain(String[]args){7.newthread(newFoo()).start();8.)9.)Whatistheresult?() A.Anexceptionisthrown.B.Theprogramexistswithoutprintinganything.C.Anerroratline1causescompilationtofail.D.Anerroratline6causesthecompilationtofail.E.“Running”isprintedandtheprogramexits.
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.
1.publicclassenclosingone（2.publicclassinsideone{}3.）4.publicclassinertest（5.publicstaticvoidmain（string[]args）（6.enclosingoneeo=newenclosingone（）；7.//insertcodehere8.）9.）Whichstatementatline7constructsaninstanceoftheinnerclass？（）A.InsideOnewei=eo.newInsideOn（）；B.Eo.InsideOneei=eo.newInsideOne（）；C.InsideOneei=EnclosingOne.newInsideOne（）；D.EnclosingOne.InsideOneei=eo.newInsideOne（）；
publicclassTest{publicstaticvoidmain(String[]args){Stringstr=NULL;System.out.println(str);}}Whatistheresult?() A.NULLB.Compilationfails.C.Thecoderunswithnooutput.D.Anexceptionisthrownatruntime.