test of the java skill

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1、TestoftheJavaSkillQuestion1:Whatwillhappenwhenyouattempttocompileandrunthiscode?classBase{publicfinalvoidamethod(){System.out.println(“amethod”);}}publicclassFinextendsBase{publicstaticvoidmain(Stringargv[]){Baseb=newBase();b.amethod();}}A.Compiletim

2、eerrorindicatingthataclasswithanyfinalmethodsmustbedeclaredfinalitselfB.CompiletimeerrorindicatingthatyoucannotinheritfromaclasswithfinalmethodsC.RuntimeerrorindicatingthatBaseisnotdefinedasfinalD.Successincompilationandoutputof“amethod”atruntimeQues

3、tion2:Giventhefollowingcodewhatwillbeoutput?publicclassPass{staticintj=20;publicstaticvoidmain(Stringargv[]){inti=10;Passp=newPass();p.amethod(i);System.out.println(i);System.out.println(j);}publicvoidamethod(intx){x=x*2;j=j*2;}}A.Error:amethodparame

4、terdoesnotmatchvariableB.20and40C.10and40D.10and20Question3:Whathappenswhenyouattempttocompileandrunthesetwofilesinthesamedirectory?//FileP1.javapackageMyPackage;classP1{voidafancymethod(){System.out.println(“whatafancymethod”);}}//FileP2.javapublicc

5、lassP2extendsP1{afancymethod();}A.BothcompileandP2outputs“whatafancymethod”whenrunB.NeitherwillcompileC.BothcompilebutP2hasanerroratruntimeD.P1compilescleanlybutP2hasanerroratcompiletimeQuestion4:Whichstatementdeclaresavariableawhichissuitableforrefe

6、rringtoanarrayof50stringobjects?A.chara[][];B.Stringa[];C.String[]a;D.Objecta[50];E.Stringa[50];Question5:GiventhefollowingdeclarationStrings="Example";Whicharelegalcode?A.s>>>=3;B.s>>=2;C.inti=s.length();D.Stringt="For"+s;E.s=s+10;Question6:Whatwill

7、happenwhenyoucompileandrunthefollowingcode?publicclassScope{privateinti;publicstaticvoidmain(Stringargv[]){Scopes=newScope();s.amethod();}publicstaticvoidamethod(){System.out.println(i);}}A.Avalueof0willbeprintedoutB.NothingwillbeprintedoutC.Acompile

8、timeerrorD.AcompiletimeerrorcomplainingofthescopeofthevariableiQuestion7:Whatwillhappenwhenyouattempttocompileandrunthisprogram?publicclassOuter{publicStringname=“Outer”;publicstaticvoidmain(Stringargv[]){Inneri=newInner();i.showName();}//Endofmainpr