東北大學面向?qū)ο蟪绦蛟O計考試試

1、本試卷共5頁第1頁東北大學考試試卷（A卷）2012—2013學年第一學期課程名稱：面向?qū)ο蟪绦蛟O計┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄總分一二三四五1Adesignpatterncansuretomakeonlyoneobjectinthesoftwaresystem.2InaUMLclassdiagramsrepresentationofaclass

2、thetopdlelowerrectangularcompartmentsrespectivelydescribetheoftheclass.3Inanobjectmodelthedatathatanobjectisresponsiblefmaintainingarerepresentedby.4Thedatainainterfacemustbe.5arethebaseactersofObjectientedProgramming.學院

3、班級學號姓名……………○……………密……………○……………封……………○…………線………………………………I.SingleChoice（20points2pointseach）1Fromwithinachildclassitsparentclassisreferredtoviathekeywd()(A)this(B)Base(C)Super(D)parent2Classesfromwhichofthefollowingpackagesa

4、reimplicitlyimptedintoeveryJavaprogram()(A)java.lang(B)java.util(C)java.awt(D)java.io3InJavathedefaultlayoutmanagerfaJPanelcomponentis()(A)BderLayout(B)GridLayout(C)GridBagLayout(D)FlowLayout4TheStrategydesignpatternisli

5、kelytobeusefulwhenimplementingwhichofthefollowing()IAnapplicationthatoffersseveralalternatestingalgithmsIIAsimpleclasstostetheaddressofanganizationofwhichonlyoneinstancecanbeinstantiated(A)None(B)Ionly(C)IIonly(D)III5Ift

6、helengthofaparticulararrayisthevalueofLIMITwhatistheindexofthelastiteminthatarray()(A)LIMIT(B)0(C)LIMIT2(D)LIMIT16Whichofthefollowingstatementsisnottrueoftheclassjava.util.ArrayList()(A)AninstanceofArrayListcangrowtoacco

7、mmodatenewitemswhenthecollectionisfull.(B)OnceanobjectisedintoaninstanceofArrayListitcanneverberemoved.(C)ItemsstedbyaninstanceofArrayListcanbeaccessedusingintegerindexes.(D)TheconstructoftheArrayListclasswhencalledwithn

8、oargumentscausesanemptyArrayListtobeconstructed.7Acollectiontypicallymodelsa_____relationship()(A)manytomany(B)zerotoone(C)onetomany(D)onetooneII.Fillinblanks.（10points，1pointeach）8Ifafileopenedfreadingdoesnotexistwhicho

9、fthefollowingeventswilloccurinJava()(A)ANullPointerExceptionwillberaised.(B)Anewfilewillbecreated(C)Aruntimeerrwilloccur(D)AFileNotFoundExceptionwillberaised.9Adesignpatternistypicallyusedto()(A)allowtheuseofobjectientat

10、edconceptsinalanguagethatisnotobjectiented(B)reducethenumberofclassesinthedesignofaprogram(C)ensurethatcodeexecutesatoptimalspeedduringruntime(D)describeapracticalsolutiontoacommondesignproblem10Whichofthefollowingstatem

11、entsis(are)trueinJava()IClassesthatcontainabstractmethodsmustbedeclaredabstract.IIClassesthatcontainprotectedmethodsmustbedeclaredabstract.(A)III(B)Ionly(C)IIonly(D)None本試卷共5頁第3頁學院班級學號姓名……………○……………密……………○……………封……………○…………

12、線………………………………IV.CreateanStudentinfmationManagementapplicationasshownFig.1usingSwingGUI.Partofthewkhasbeendone.Youshouldfinishthecode.（30points）Fig1StudentInfmationManagementApplicationimptjava.awt.imptjava.awt.event.Acti

13、onListenerimptjava.awt.event.ActionEventimptjava.io.FileNotFoundExceptionimptjava.io.FileOutputStreamimptjava.io.PrintWriterimptjavax.swing.Demonstratesthecomponent@linkJTextField.Thisclassextendsclass@link@JPanel.public

14、classStudentManagementextendsJPanelprivateJLabellabelNameprivateJLabellabelNoprivateJLabellabelGenderprivateJTextFieldtextFieldNameprivateJTextFieldtextFieldNoprivateJTextFieldtextFieldGenderJButtonaddStudentButtonJButto