现有两个文件:packageX;publicclassX{publicstaticvoiddoX(){System.out.print("doX");}}和:importx.X;classFind{publiCstaticvoidmain(String[]args){XmyX=newX();myX.doX();X.doX();x.X.aoX():x.XmyX2=newx.X();myx2.doX();}}结果为:()A.Find类中第4行出现一个错误,编译失败。B.Find类第5行出现一个错误,编译失败。

题目

现有两个文件:packageX;publicclassX{publicstaticvoiddoX(){System.out.print("doX");}}和:importx.X;classFind{publiCstaticvoidmain(String[]args){XmyX=newX();myX.doX();X.doX();x.X.aoX():x.XmyX2=newx.X();myx2.doX();}}结果为:()

A.Find类中第4行出现一个错误,编译失败。

B.Find类第5行出现一个错误,编译失败。

C.Find类第6行出现一个错误,编译失败。

D.doXdoXdoXdoX


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  • 第1题:

    现有2个文件:packagex;publicclassX{publicstaticvoiddoX(){System.out.print("doX");}}和:classFind{publicstaticvoidmain(String[]args){//insertcodehere}}哪两行分别插入到类Find的第3行将编译并产生输出doX”?()

    A.doX();

    B.X.doX();

    C.x.X.doX();

    D.x.XmyX=newx.X();myX.doX();


    参考答案:C, D

  • 第2题:

    publicclassX{publicstaticvoidmain(String[]args){try{badMethod();System.out.print(A”);}catch(RuntimeExceptionex){System.out.print(B”);}catch(Exceptionex1){System.out.print(C”);}finally{System.out.print(D”);}System.out.print(E”);}publicstaticvoidbadMethod(){thrownewRuntimeException();}}Whatistheresult?()

    A.BD

    B.BCD

    C.BDE

    D.BCDE

    E.ABCDE

    F.Compilationfails.


    参考答案:C

  • 第3题:

    publicclassX{publicstaticvoidmain(String[]args){try{badMethod();System.out.print(A”);}catch(Exceptionex){System.out.print(B”);}finally{System.out.print(C”);}System.out.print(D”);}publicstaticvoidbadMethod(){}}Whatistheresult?()

    A.AC

    B.BD

    C.ACD

    D.ABCD

    E.Compilationfails.


    参考答案:C

  • 第4题:

    publicclassX{publicstaticvoidmain(String[]args){try{badMethod();System.out.print(A”);}catch(Exceptionex){System.out.print(C”);}finally{System.out.print(B”);}System.out.print(D”);}publicstaticvoidbadMethod(){thrownewError();}}Whatistheresult?()

    A.ABCD

    B.Compilationfails.

    C.Cisprintedbeforeexitingwithanerrormessage.

    D.BCisprintedbeforeexitingwithanerrormessage.

    E.BCDisprintedbeforeexitingwithanerrormessage.


    参考答案:B
    Thecorrectansweris:Bisprintedandthenanerrormessageisprinted.TheexceptioncatchcannotcatchanErrorbecausethisclassdoesnotextendExceptionbutitimplementsthrowable.

  • 第5题:

    publicclassX{publicstaticvoidmain(String[]args){try{badMethod();System.out.print(A”);}catch(Exceptionex){System.out.print(B”);}finally{System.out.print(C”);}System.out.print(D”);}publicstaticvoidbadMethod(){thrownewRuntimeException();}}Whatistheresult?()

    A.AB

    B.BC

    C.ABC

    D.BCD

    E.Compilationfails.


    参考答案:D