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publicclassBoxer1{2.Integeri;3.intx;4.publicBoxer1(inty){5.x=i＋y;6.System.out.println(x);7.}8.publicstaticvoidmain(String[]args){9.newBoxer1(newInteger(4));10.}11.}Whatistheresult?()
A.Thevalue“4”isprintedatthecommandline.
B.Compilationfailsbecauseofanerrorinline5.
C.Compilationfailsbecauseofanerrorinline9.
D.ANullPointerExceptionoccursatruntime.
E.ANumberFormatExceptionoccursatruntime.
F.AnIllegalStateExceptionoccursatruntime.
参考答案
更多 “ publicclassBoxer1{2.Integeri;3.intx;4.publicBoxer1(inty){5.x=i＋y;6.System.out.println(x);7.}8.publicstaticvoidmain(String[]args){9.newBoxer1(newInteger(4));10.}11.}Whatistheresult?() A.Thevalue“4”isprintedatthecommandline.B.Compilationfailsbecauseofanerrorinline5.C.Compilationfailsbecauseofanerrorinline9.D.ANullPointerExceptionoccursatruntime.E.ANumberFormatExceptionoccursatruntime.F.AnIllegalStateExceptionoccursatruntime. ” 相关考题
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1.classA{3.publicStringtoString（）{4.return4”；5.}6.}7.classBextendsA{8.publicStringtoString（）{9.returnsuper.toString（）+3”；10.}11.}12.publicclassTest{13.publicstaticvoidmain（String[]args）{14.System.out.printIn（newB（））；15.}16.}Whatistheresult()？A.Compilationsucceedsand4isprinted.B.Compilation……………isprinted.C.Anerroronline9causecompilationtofail.D.Anerroronline14causecompilationtofail.E.Compilationsucceedsbutanexceptionisthrownatline9.
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classHorseRadish{2.／／insertcodehere3.protectedHorseRadish(intx){4.System.out.println(bokchoy）；5.｝6.｝7.classWasabiextendsHorseRadish｛8.publicstaticvoidmain（String[]args）｛9.Wasabiw＝newWasabi（）；10.｝11.｝分别插入到第2行，哪两项允许代码编译并产生bokchoy输出结果？（）A.//justacommentB.protectedHorseRadish（）｛｝C.protectedHorseRadish（）｛this（42）；｝D.protectedHorseRadish（）｛newHorseRadish（42）；｝
考题
public static void main（String[]args）{Integer i=new Integer（1）+new Integer（2）；switch（i）{case3：System.out.println（three）；break；default：System.out.println（other）；break；}}Whatistheresult？（）A.threeB.otherC.Anexceptionisthrownatruntime.D.Compilationfailsbecauseofanerroronline12.E.Compilationfailsbecauseofanerroronline13.F.Compilationfailsbecauseofanerroronline15.
考题
现有：1.classHorseRadish｛2.//insertcodehere3.protectedHorseRadish（intx）｛4.System.out.println（bokchoy）；5.｝6.｝7.classWasabiextendsHorseRadish｛8.publicstaticvoidmain（String[]args）｛9.Wasabiw＝newWasabi（）；10.｝11.｝分别插入到第2行，哪两项允许代码编译并产生bokchoy输出结果？（）A.//justacommentB.protectedHorseRadish（）｛｝C.protectedHorseRadish（）｛this（42）；｝D.protectedHorseRadish（）｛newHorseRadish（42）；｝
考题
1.publicclassSimpleCalc{2.publicintvalue；3.publicvoidcalculate（）{value+=7；}4.}And：1.publicclassMultiCalcextendsSimpleCalc{2.publicvoidcalculate（）{value-=3；}3.publicvoidcalculate（intmultiplier）{4.calculate（）；5.super.calculate（）；6.value*=multiplier；7.}8.publicstaticvoidmain（String[]args）{9.MultiCalccalculator=newMultiCalc（）；10.calculator.calculate（2）；11.System.out.println（”Valueis：+calculator.value）；12.}13.}Whatistheresult？（）
考题
publicclassX{2.publicstaticvoidmain(String[]args){3.int[]a=newint[1]4.modify(a);5.System.out.printIn(a[0]);6.}7.8.publicstaticvoidmodify(int[]a){9.a[0]＋＋;10.}11.}Whatistheresult?()
A.Theprogramrunsandprints“0”B.Theprogramrunsandprints“1”C.Theprogramrunsbutabortswithanexception.D.Anerror“possibleundefinedvariable”atline4causescompilationtofail.E.Anerror“possibleundefinedvariable”atline9causescompilationtofail.
考题
publicclassIfTest(publicstaticvoidmain(string[]args){intx=3;inty=1;if(x=y)system.out.printIn(Notequal”);elsesystem.out.printIn(Equal”);})Whatistheresult?()
A.Theoutputis“Equal”B.Theoutputin“NotEqual”C.Anerroratline5causescompilationtofall.D.Theprogramexecutesbutdoesnotprintamessage.
考题
publicclassTest{privatestaticint[]x;publicstaticvoidmain(String[]args){System.out.println(x[0]);}}Whatistheresult?()
A.0B.nullC.Compilationfails.D.ANullPointerExceptionisthrownatruntime.E.AnArrayIndexOutOfBoundsExceptionisthrownatruntime.
考题
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.
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