publicclassTest{2.publicstaticvoidmain(Stringargs[]){3.classFoo{4.publicinti=3;5.}6.Objecto=(Object)newFoo();7.Foofoo=(Foo)o;8.System.out.printIn(foo.i);9.}10.}Whatistheresult?()A.Compilationwillfail.B.Compilationwillsucceedandtheprogramwillprint“3”C.Comp

题目
publicclassTest{2.publicstaticvoidmain(Stringargs[]){3.classFoo{4.publicinti=3;5.}6.Objecto=(Object)newFoo();7.Foofoo=(Foo)o;8.System.out.printIn(foo.i);9.}10.}Whatistheresult?()

A.Compilationwillfail.

B.Compilationwillsucceedandtheprogramwillprint“3”

C.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline6.

D.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline7.

相似考题

1.1.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.

2.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.

3.publicclasstest(2.publicstaticvoidmain(stringargs[]){3.int1=0;4.while(i){5.if(i==4){6.break;7.}8.＋＋i;9.}10.11.}12.)Whatisthevalueofiatline10?()A.0B.3C.4D.5E.Thecodewillnotcompile.

4.publicclassTest{publicstaticvoidmain(String[]args){stringfoo=blue”;stringbar=foo;foo=green”;System.out.printIn(bar);}}Whatistheresult?()A.Anexceptionisthrown.B.Thecodewillnotcompile.C.Theprogramprints“null”D.Theprogramprints“blue”E.Theprogramprints“green”

更多“publicclassTest{2.publicstaticvoidmain(Stringargs[]){3.classFoo{4.publicinti=3;5.}6.Objecto=(Object)newFoo();7.Foofoo=(Foo)o;8.System.out.printIn(foo.i);9.}10.}Whatistheresult?() ”相关问题

  • 第1题：

    publicclassTest{publicstaticvoidmain(Stringargs[]){classFoo{publicinti=3;}Objecto=(Object)newFoo();Foofoo=(Foo)o;System.out.println(i=＋foo.i);}}Whatistheresult?()

    A.i=3

    B.Compilationfails.

    C.AClassCastExceptionisthrownatline6.

    D.AClassCastExceptionisthrownatline7.


    参考答案：A

  • 第2题：

    publicclassFooimplementsRunnable(publicvoidrun(Threadt){system.out.printIn(Running.”);}publicstaticvoidmain(Stringargs){newthread(newFoo()).start();})Whatistheresult?()

    A.Anexceptionisthrown.

    B.Theprogramexistswithoutprintinganything.

    C.Anerroratline1causescompilationtofail.

    D.Anerroratline6causesthecompilationtofail.

    E.“Running”isprintedandtheprogramexits.


    参考答案：C

  • 第3题：

    publicclassTest{2.publicstaticvoidmain(Stringargs){3.unsignedbyteb=0;4.b－－;5.6.}7.}Whatisthevalueofbatline5?()

    A.-1

    B.255

    C.127

    D.Compilationwillfail.

    E.Compilationwillsucceedbuttheprogramwillthrowanexceptionatline4.


    参考答案：D

  • 第4题：

    publicclassTest{publicstaticvoidmain(Stringargs){stringfoo=blue”;stringbar=foo;foo=green”;System.out.printIn(bar);}}Whatistheresult?()

    A.Anexceptionisthrown.

    B.Thecodewillnotcompile.

    C.Theprogramprints“null”

    D.Theprogramprints“blue”

    E.Theprogramprints“green”


    参考答案：D

  • 第5题：

    publicclassTest{publicstaticvoidmain(Stringargs){classFoo{publicinti=3;}Objecto=(Object)newFoo();Foofoo=(Foo)o;System.out.printIn(foo.i);}}Whatistheresult?()

    A.Compilationwillfail.

    B.Compilationwillsucceedandtheprogramwillprint“3”

    C.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline6.

    D.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline7.


    参考答案：B

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