昆夷實業(yè)高級javaweb軟件工程師

實業(yè)高級JavaWEB工程 1.1.Whatwillbetheresultofexecutingthefollowingcode?3.//Filename;SuperclassX.java5.package7.publicclassSuperclassX9.11.protectedvoidsuperclassMethodX()17.intsuperclassVarX;23.//FilenameSubclassY.java25.1.packagepackageX.packageY;29.3.publicclassSubclassYextendsSuperclassX33.5.SuperclassXobjX=newSubclassY();35.6.SubclassYobjY=newSubclassY();37.7.i;45.11.i=objY.superclassVarX;odiferodiferwordshouldbe C.nomodiferpilationerroratline5pilationerroratlineC.RuntimeexceptionatlineD.Noneof2:Aclassdesignrequiresthatamembervariableshouldbeaccessibleonlybysame1.Whatwillhappenwhenyouattempttocompileandrunthefollowingcode?3.intOutput=5.booleanb1=false;7.if((b1==true)&&((Output+=10)==20))9.11.System.out.println("Weareequal"+19.System.out.println("Notequal!"+Output);pilationpilationerror,attemptingtoperformbinarycomparisononlogicaldatatypepilationandoutputof"Weareequal10".pilationandoutputof"Notequal!pilationandoutputof"Notequal!1.Whatresultsfromattemptingtocompileandrunthefollowingcode?3.publicclassTernary5.7.publicstaticvoidmain(Stringargs[])9.11.inta=5;13.System.out.println("Valueis-"+((a<5)?9.9:9));A.prints:A.prints:Valueis-pilationpilationC.prints:Valueis-D.NoneofpublicpublicclasspublicObjectObjecto=newFloat(3.14F);//line3Object[]oa=newObject[1];//line4oa[0]=o;//line5o=null;//linereturnoa[0];//line}18.WhenistheFloatobject,createdinline3,eligible arbagejustjustafterlinejustafterlinejustafterline7(thatis,asthemethodneverinthis7:7:Whatiswrittentothestandardoutputgiventhefollowingstatement:System.out.println(4|7);Selecttherightanswer:GiveGivethefollowingjavapublicclasspublicstaticvoidmain(Stringstaticintx[]=new}}WhichstatementisWhenWhencompile,someerrorwillWhenrun,someerrorwillOutputisOutputispublicclassOuterClassprivatedoubled1=//insertcode}Youneedtoinsertaninnerclassdeclarationatline3.WhichtwoinnerclassdeclarationsareclassclassInnerOne{publicstaticdoublemethoda(){returnd1;}publicclassInnerOne{staticdoublemethoda(){returnd1;}privateclassInnerOne{doublemethoda(){returnd1;}D.staticD.staticclassInnerOne{protecteddoublemethoda(){returnd1;}10:WhichstatementaboutlistenerisA.MostcomponentallowmultiplelistenerstobeB.Ifmultiplelistenerbeaddtoasinglecomponent,theeventonlyaffectedonelistener.ponentdon?tallowmultiplelistenerstobeadd.11:Aclassdesignrequiresthataparticularmembervariablemustbeaccessiblefordirectaccessbyanysubclassesofthisclass.butotherwisenotbyclasseswhicharenotmembersofthesamepackage.Whatshouldbedonetoachievethis?A.ThevariableshouldbemarkedB.ThevariableshouldbemarkedC.ThevariableshouldbemarkedD.ThevariableshouldhavenospecialaccessGiveGivethefollowingpublicclasspublicstaticvoidmain(Stringargs[]int ngitforl}}WhichwellbeA.ngitforlisB.ngitforlisC.ngitforlisD.ngitforlis1.1.Whatwillhappenwhenyouattempttocompileandrunthefollowingcode?3.publicclassSx=5;15.staticintx,y;17.publicstaticvoidmain(Stringargs[])System.out.println(x+y+29.publicstaticvoidmyMethod()33.y=x+++printsprints:prints:C.prints:D.prints:14:ConsidertheclasshierarchyshownclassFourWheelerimplementsDrivingUtilitiesclassCarextendsFourWheelerclassTruckextendsFourWheelerclassBusextendsFourWheelerclassCraneextendsFourWheelerConsiderthefollowingcode1.DrivingUtilitiesdu;2.FourWheelerfw;TruckmyTruck=new4.du=5.fw=new6.fw=Whichofthestatementsbelowaretrue?Line4willnotcompilebecauseaninterfacecannotrefertoanThecodewillcompileandC.TheC.Thecodewillnotcompilewithoutanhierarchywithoutcastingisnotatline6,becausegoingdownD.Thecodewillcompileutanatline6butwi