软件学院面向对象程序设计期末B卷.docx

选择题（30分）
说明：每题2分，只有1个正确答案，请将正确答案填写在下面表格中。
题号123456789101112131415答案
WhichofthefollowingstatementsiscorrectaboutJavapackages?
A. Apackagemaycontainunlimitednumberofnestedsub-packages.
B. ApackageisacollectionofrelatedJavasourceprogram.
C. Usingtheimportstatementcanincludealltheclassesintothecurrentprogramfromaspecifiedpackageanditssub-packages.
D. Ifthereisnopackagestatementused,thecurrentclasswillnotbeinanypackage.
WhichoneisthewrongstatementaboutJavaconstructors?
A. Thenameofaconstructormustbethesameasitsclass’sname.
B. Aconstructorhasnoreturnvalueandcannotbemodifiedbyvoid.
C. Aconstructoroftheparentclasscannotbeinheritedbyitssub-classes.
D. Allconstructorsmustbemodifiedbypublic.
Givingthecodebellow:
classTest{
privateintm;
publicstaticvoidfun(){/*somecode...*/}
}
Howtomakethemembervariablemaccessibleformethodfun()?
A. change"privateintm"to"protectedintm"
B. change"privateintm"to"publicintm"
C. change"privateintm"to"staticintm"
D. change"privateintm"to"intm"
Whichofthefollowingfunctionsisanoverloadingfunctionof"publicvoidexample(){...}"?
A. publicvoidexample(){...}
B. publicintexample(){...}
C. publicvoidexample2(){...}
D. publicintexample(intm,floatf){...}

InJava,aclassmayhavemanydifferentmethodswiththesamename.Thenumber,type,sequencesofargumentsinthesemethodsaredifferent,andthereturnvaluecanbedifferentaswell.Whatdowecallthisfeatureintermsofobject-orientedprogramming?
A. Hiding B. Overriding
C. Overloading D. ThisfeatureisnotsupportedinJava

Howtoexecutethefollowingprogram?
publicclassTest{
publicstaticvoidmain(Stringargs[]){
System.out.println(args[0]);
}
}
A. javaTest.class B. javaTest
C. javaTestaString D. javacTest

Ifacontainerhasbeenresized,whichofthefollowinglayoutmanagerdidnotchangetheinternalcomponents'size?
A. CardLayout B. FlowLayout
C. BorderLayout D. GridLayout

Whichistherightstatementaboutexceptionhandling?
A. Injava,allexceptionsarenecessarytobecaughtandhandled.
B. The“catch”statementcatchesexceptionbytype-matching.
C. Inthe“try-catch-finally”str