classA{publicbytegetNumber(){return1;}}classBextendsA{publicshortgetNumber(){return2;}publicstaticvoidmain(Stringargs[]){Bb=newB();System.out.println(b.getNumber());}}Whatistheresult?()A.1B.2C.Anexceptionisthrownatruntime.D.Compilationfailsbecauseofanerro

题目
classA{publicbytegetNumber(){return1;}}classBextendsA{publicshortgetNumber(){return2;}publicstaticvoidmain(Stringargs[]){Bb=newB();System.out.println(b.getNumber());}}Whatistheresult?()

A.1

B.2

C.Anexceptionisthrownatruntime.

D.Compilationfailsbecauseofanerrorinline8.

E.Compilationfailsbecauseofanerrorinline14.

相似考题

1.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

2.1.classA{2.publicbytefileNumber(){3.returnl;4.}5.}6.7.ClassBextendsA{8.publicshortgetNumber(){9.return2;10.}11.12.publicshortgetNumber(){13.Bb=newB();14.System.out.printIn(b.getNumber());15.}16.}Whatistheresult（）?A.Compilationsucceedsandlisprinted.B.Compilationsucceedsand2printed.C.Anerroratline8causecompilationtofail.D.Anerroratline14causecomplicationtofail.E.Complicationsucceedsbutanexceptionisthrownatline14.

3.1.classA{2.publicbytegetNumber（）{3.return1；4.}5.}6.7.classBextendsA{8.publicshortgetNumber（）{9.return2；10.}11.12.publicstaticvoidmain（Stringargs[]）{13.Bb=newB（）；14.System.out.printIn（b.getNumber（））15.}16.}Whatistheresult？（）A.Compilationsucceedsand1isprinted.B.Compilationsucceedsand2isprinted.C.Anerroratline8causescompilationtofail.D.Anerroratline14causescompilationtofail.E.Compilationsucceedsbutanexceptionisthrownatline14.

4.给定如下Java程序片断:classA{publicA(){System.out.println("A");}}classBextendsA{publicB(){System.out.println("B");}publicstaticvoidmain(String[]args){Bb=newB();}}上述程序将()。A.不能通过编译B.通过编译，输出为：ABC.通过编译，输出为：BD.通过编译，输出为：A

更多“classA{publicbytegetNumber(){return1;}}classBextendsA{publicshortgetNumber(){return2;}publicstaticvoidmain(Stringargs[]){Bb=newB();System.out.println(b.getNumber());}}Whatistheresult?() ”相关问题

  • 第1题：

    classA{publicA（）{System.out.println（hellofroma”）；}}classBextendsA{publicB（）{System.out.println（hellofromb”）；super（）；}}publicclassTest{publicstaticvoidmain（Stringargs[]）{Aa=newB（）；}}Whatistheresultwhenmainisexecuted？（）

    A.Compilationfails.

    B.hellofroma

    C.hellofromb

    D.hellofrombhellofroma

    E.hellofromahellofromb


    参考答案：A
    Calltosupermustbefirststatementinconstructor.

  • 第2题：

    classA{publicbytegetNumber(){return1;}}classBextendsA{publicshortgetNumber(){return2;}publicstaticvoidmain(Stringargs){Bb=newB();System.out.printIn(b.getNumber())}}Whatistheresult?()

    A.Compilationsucceedsand1isprinted.

    B.Compilationsucceedsand2isprinted.

    C.Anerroratline8causescompilationtofail.

    D.Anerroratline14causescompilationtofail.

    E.Compilationsucceedsbutanexceptionisthrownatline14.


    参考答案：C

  • 第3题：

    【分录题】（9-2）请阅读程序，写出程序运行结果。 public class Demo8 { public static void main（String args[]) { int b = get（); System.out.println（b); } public static int get（) { try { return 1; } finally { return 2; } } }


    B

  • 第4题：

    classA{publicStringtoString（）{return4”；}}classBextendsA{8.publicStringtoString（）{returnsuper.toString（）+3”；}}publicclassTest{publicstaticvoidmain（Stringargs）{System.out.printIn（newB（））；}}Whatistheresult？（）

    A.Compilationsucceedsand4isprinted.

    B.Compilationsucceedsand43isprinted.

    C.Anerroronline9causescompilationtofail.

    D.Anerroronline14causescompilationtofail.

    E.Compilationsucceedsbutanexceptionisthrownatline9.


    参考答案：B

  • 第5题：

    classA{publicintgetNumber(inta){returna＋1;}}classBextendsA{publicintgetNumber(inta){returna＋2}publicstaticvoidmain(Stringargs){Aa=newB();System.out.printIn(a.getNumber(0));}}Whatistheresult?()

    A.Compilationsucceedsand1isprinted.

    B.Compilationsucceedsand2isprinted.

    C.Anerroratline8causescompilationtofail.

    D.Anerroratline13causescompilationtofail.

    E.Anerroratline14causescompilationtofail.


    参考答案：B

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