個筆試題智遠軟件

Whatwillbetheresultofexecutingthefollowing//Filename;SuperclassX.javapackagepackageX;publicclass{protectedvoid{}int}//Filename3.publicclassSubclassYextendsSuperclassX5.SuperclassXobjX=newSubclassY();6.SubclassYobjY=newSubclassY();7.voidsubclassMethodY()10.intWhatwillbetheresultofexecutingthefollowing//Filename;SuperclassX.javapackagepackageX;publicclass{protectedvoid{}int}//Filename3.publicclassSubclassYextendsSuperclassX5.SuperclassXobjX=newSubclassY();6.SubclassYobjY=newSubclassY();7.voidsubclassMethodY()10.inti;pilationerroratline5pilationerroratlineC.RuntimeexceptionatlineD.NoneofThefollowingcodeisentirecontentsofafilecalledExample.java,causespreciselyoneerrorduringcompilation:classSubClassextends}classBaseClass(){Stringstr;publicBaseClass(){publicBaseClass(Strings){publicclassExample{publicvoidSubClasss=newSubClass(“o”);BaseClassb=newBaseClass(“world”);}}WhichlinewouldbecausetheThefollowingcodeisentirecontentsofafilecalledExample.java,causespreciselyoneduringclassSubClassextends}classBaseClass(){Stringstr;publicBaseClass(){publicBaseClass(Strings){publicclassExample{publicvoidSubClasss=newSubClass(“ BaseClassb=newBaseClass(“world”);}}WhichlinewouldbecausetheWhatwillbeprintedwhenyouexecutethefollowingclass{Yb=newY();{}}class{{}}publicclassZextends{Yy=newY();{}publicstaticvoidmain(String[]{new}}Whatwillbeprintedwhenyouexecutethefollowingclass{Yb=newY();{}}class{{}}publicclassZextends{Yy=newY();{}publicstaticvoidmain(String[]{new}}GiventhefollowingclassclassA{protectedinti;A(inti){}}whichofthefollowingwouldbeavalidinnerclassforthisclass?Selectvalidanswer:GiventhefollowingclassclassA{protectedinti;A(inti){}}whichofthefollowingwouldbeavalidinnerclassforthisclass?Selectvalidanswer:classB{classBextendsA{classBextendsA{B(){System.out.println(“i=”+i);}classB{classA{}下述程序代碼中有語法錯誤的行是（inti,ia[10],ib[10]; for(i=0;i<=9;i++) /*第2行*/ /*第3行*/ /*4行下述程序代碼中有語法錯誤的行是（inti,ia[10],ib[10]; for(i=0;i<=9;i++) /*第2行*/ /*第3行*/ /*第4行*/1234GivethisclassclassExample{privateintx;//restofclass}AssumingthatxinvokedbythecodejavaExample,whichstatementcanmadexbedirectlyaccessibleinmain()methodofExample.java?GivethisclassclassExample{privateintx;//restofclass}AssumingthatxinvokedbythecodejavaExample,whichstatementcanmadexbedirectlyaccessibleinmain()methodofExample.java?ChangeprivateintxtopublicintchangeprivateintxtostaticintChangeprivateintxtoprotectedintchangeprivateintxtofinalint8:abint型變量,則執(zhí)行下述語句組后,b{}while(b--publicclassOuterClass{privatedoubled1=1.0;//insertcode}Youneedtoinsertaninnerclassdeclarationatline3.WhichtwoinnerclassdeclarationsarepublicclassOuterClass{privatedoubled1=1.0;//insertcode}Youneedtoinsertaninnerclassdeclarationatline3.WhichtwoinnerclassdeclarationsareclassInnerOne{publicstaticdoublemethoda(){returnd1;}publicclassInnerOne{staticdoublemethoda(){returnd1;}privateclassInnerOne{doublemethoda(){returnd1;}staticclassInnerOne{protecteddoublemethoda(){returnd1;}}10:WhicharenotJava 11:Inthefollowingpiecesofcode,whichonewillcompilewithoutanyA.StringBuffersb1="abcd";B.Booleanb=newBoolean("abcd");C.C:byteb=255;D.floatfl=publicclassX{publicObjectObjecto=newFloat(3.14F);//line3Object[]oa=newObject[1];//line4oa[0]=o;//line5o=null;//linereturnoa[0];//line}}WhenistheFloatobject,createdinline3,eligibleforgarbagecollection?publicclassX{publicObjectObjecto=newFloat(3.14F);//line3Object[]oa=newObject[1];//line4oa[0]=o;//line5o=null;//linereturnoa[0];//line}}WhenistheFloatobject,createdinline3,eligibleforgarbageA.justafterlineB.justafterlineC.justafterline7(thatis,asthemethodD.neverinthisGivethefollowingjavasource//pointpublicclass//do}WhichstatementiscorrectlyJavasyntaxatpointx?Givethefollowingjavasourcefragement://pointpublicclass//do}WhichstatementiscorrectlyJavasyntaxatpointA.publicclassMyClass{//dootherB.staticintC.classMyClass{//dosomething…}14:WhichofthefollowingstatementsarenotA.longl=B.inti=C.doubled=D.doublet=Whatwillhappenwhenyouattempttocompileandrunthefollowingcode?intOutput=10;booleanb1=if((b1==true)&&((Output+=10)=={System.out.println("Weareequal"+}{System.out.println("Notequal!"+}Whatwillhappenwhenyouattempttocompileandrunthefollowingcode?intOutput=10;booleanb1=if((b1==true)&&((Output+=10)=={System.out.println("Weareequal"+}{System.out.println("Notequal!"+}

pilationerror,attemptingtoperformbinarycomparisononlogicaldatatypepilationandoutputof"Weareequal10".pilationandoutputof"Notequal!20".pilationandoutputof"Notequal!Whatwillbetheresultofexecutingthefollowingcode?booleana=true;booleanb=false;booleanc=true;if(a==true)if(b==if(c==true) System.out.println("Somethingsaretrueinthisworld"); System.out.println("Nothingistrueinthisworld!");elseif(a&&(b=c))System.out.println("It'stooconfusing lwhatistrueandwhatiselseSystem.out.println("Heythiswon'tWhatwillbetheresultofexecutingthefollowingcode?booleana=true;booleanb=false;booleanc=true;if(a==true)if(b==if(c==true) System.out.println("Somethingsaretrueinthisworld"); System.out.println("Nothingistrueinthisworld!");elseif(a&&(b=c)) System.out.println("It'stooconfusingto lwhatistrueandwhatis System.out.println("Heythiswon'tcompile");A.Thecodewon'tB."Somethingsaretrueinthisworld"willbeC."Heythiswon'tcompile"willbeD.Noneofpublicvoidcreate()myVect=new4)publicvoidcreate()myVect=new4)18:WhichstatementaboutlistenerisMostcomponentallowmultiplelistenerstobeIfmultiplelistenerbeaddtoasinglecomponent,theeventonlyaffectedonelistener.ponentdon?tallowmultiplelistenerstobeadd.SelectvalididentifierofJava:SelectvalididentifierofWhichisthemostappropriatecodesnippetthatcanbeinsertedatline18inthefollowing(Assumethatthecodeiscompiledandrunwithassertionsimportpublicclass{privateHashMapcctld;public{cctld=newcctld.put("in", cctld.put("uk","United//more //othermethodspublicStringgetCountry(String{//WhatshouldbeinsertedStringcountry=return 22.Whichisthemostappropriatecodesnippetthatcanbeinsertedatline18inthefollowingcode?(Assumethatthecodeiscompiledandrunwithassertionsenabled)importpublicclass{privateHashMapcctld;{cctld=newcctld.put("in","cctld.put("uk","Unitedcctld.put("au",//more //othermethodspublicStringgetCountry(String{//WhatshouldbeinsertedStringcountry=return 22.assertcountryCode!=assertcountryCode!=null:"Countrycodecannotbenull"assertcctld!=null:"Nocountrycodedata