JAVA双语教学考试试B卷及答案

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1、班级学号姓名密封装订线密封装订线密封装订线B卷注意事项：请将各题答案按编号顺序填写到答题卷上，答在试卷上无效。一、单选题（本题共40小题，每小题1分，共40分）1.Whatisthereturn-typeofthemethodsthatimplementtheMouseListenerinterface?A.booleanB.BooleanC.voidD.Point2.SelectvalididentifierofJava:A.%passwdB.3d_gameC.$chargeD.this3.Whichdeclaresanabstractmethodinanabs

2、tractJavaclass?A.publicabstractmethod();B.publicabstractvoidmethod();C.publicvoidabstractMethod(};D.publicabstractvoidmethod(){}4.Whichstatementaboutlisteneristrue?A.Mostcomponentunallowmultiplelistenerstobeadded.B.Ifmultiplelistenerbeaddtoasinglecomponent,theeventonlyaffectedoneliste

3、ner.C.Componentdon’tallowmultiplelistenerstobeadd.D.ThelistenermechanismallowsyoutocallanaddXxxxListenermethodasmanytimesasisneeded,specifyingasmanydifferentlistenersasyourdesignrequire.5.Whichmethodyoudefineasthestartingpointofnewthreadinaclassfromwhichnewthethreadcanbeexcution?A.pub

4、licvoidstart()B.publicvoidrun()C.publicvoidint()D.publicstaticvoidmain(Stringargs[])6.Whichstatementiscorrectlydeclareavariableawhichissuitableforreferingtoanarrayof50stringemptyobject?A.String[]aB.StringaC.chara[][]D.Stringa[50]7.WhichcannotbeaddedtoaContainer?A.aMenuB.aComponentC.aC

5、ontainerD.anApplet8.Whichisthemain()method’sreturnofaapplication?A.StringB.byteC.charD.void9.Whichiscorrectedargumentofmain()methodofapplication?A.StringargsB.Stringar[]C.Charargs[][]D.StringBufferarg[]10.Floats=newFloat(0.9F);Floatt=newFloat(0.9F);Doubleu=newDouble(0.9);Whichexpressi

6、on’sresultistrue?A.s==tB.s.equals(t)C.s==uD.t.equals(u)面向对象程序设计（JAVA）第14页共14页1.WhicharenotJavakeyword?A.gotoB.nullC.FALSED.const2.Runacorrectedclass:java–csAClassabcWhichstatementistrue?A.args[0]=”-cs”;B.args[1]=”abc”;C.args[0]=”java”;D.args[0]=”a”;3.Shortanswer:Thedecimalvalue

7、ofiis12,theoctalivalueis:A.14B.014C.0x14D.0124.Shortanswer:Thedecimalvalueofiis7,thehexadecimalivalueis:A.7B.07C.0x7D.x075.Whichistherangeofchar?A.-27~27-1B.0~216-1C.0~216D.0~286.Whichstatementistrueaboutaninnerclass?A.ItmustbeanonymousB.ItcannotimplementaninterfaceC.Itisonlyaccessibl

8、einth