姓名年级院系专业学号西北大学2007----2008学年第1学期本科考试出题专用纸考试科目《Java程序设计》总分9.Whichofthefollowingisnotnecessarytousetheeventdelegationmodel?Aneventlistenermustberegistered.b.Aneventhandlermustbeimplemented.Theappropriateinterfacemustbeimplemented.d.Theappropriateinterfacemustberegistered.10.WhichconstructorbelowcreatesaJInternalFramethatisresizable,closable,maximizable,andminimizable?JInternalFramef=newJInternalFrame("InternalFrame",true,true,true,true);JInternalFrameframe=newJInternalFrame("InternalFrame",true,true,false,true);JInternalFrameframe=newJInternalFrame("InternalFrame",true,true,true,false);JInternalFrameframe=newJInternalFrame("InternalFrame",false,false,true,true);11.TheGridBagContraintsconstantRELATIVEmeansthatThecomponentisthelastcomponent.Thecomponentisthenexttolastcomponent.Thecomponentshouldbeplacedrelativetothepreviouscomponent.Bothbandc.12.Whichofthechoicesbelowdonotcompletethesentencecorrectly?A_________isa___________.JMenuBar/JComponent.b.JMenuItem/AbstractButton.JMenu/JMenuItem.d.JRadioButtonMenuItem/JMenu.13.classA{protectedintmethod(inta,intb){return0;}}WhichtwoarevalidinaclassthatextendsclassA?(Choosetwo)A.publicintmethod(inta,intb){return0;}B.privateintmethod(inta,intb){return0;}C.privateintmethod(inta,longb){return0;}D.publicshortmethod(inta,intb){return0;}E.staticprotectedintmethod(inta,intb){return0;}AandB.b.AandC.c.AandDd.BandC.e.BandDf.CandD14.AJFramesupportsthreeoperationswhentheuserclosesthewindow.Whichofthechoicesbelowisnotoneofthethree:DISPOSE_ON_CLOSE.b.DO_NOTHING_ON_CLOSE.c.LOWER_ON_CLOSE.d.HIDE_ON_CLOSE.15.WhichofthefollowingisnotanexistingclassinJava?ArithmeticException.DivideByZeroException.NumberFormatException.AlloftheaboveexistinJava.注意：答案必须写在统一配发的答题纸上。本试卷满分70分，平时成绩30分。一、SingleChoice(1pointperquestion，16points)1.Toindicatethatareferencealwaysreferstothesameobject,usethekeyword________.abstract.b.final.c.static.d.interface.2.Whichstatementbelowistrue?CallingrepaintforaSwingGUIcomponentalwayscausesthe