scjp mock exam 3.doc

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1、SCJPMockExam3Question1)Whatwillhappenwhenyouattempttocompileandrunthiscode?abstractclassBase{abstractpublicvoidmyfunc();publicvoidanother(){System.out.println("Anothermethod");}}publicclassAbsextendsBase{publicstaticvoidmain(Stringargv[]){Absa=newAbs();a.amethod();}publicvoidmyfunc(){System.out.prin

2、tln("MyFunc");}publicvoidamethod(){myfunc();}}1)Thecodewillcompileandrun,printingoutthewords"MyFunc"2)ThecompilerwillcomplainthattheBaseclasshasnonabstractmethods3)ThecodewillcompilebutcomplainatruntimethattheBaseclasshasnonabstractmethods4)Thecompilerwillcomplainthatthemethodmyfuncinthebaseclasshas

3、nobody,nobodyatalltoloooveitAnswertoQuestion1--------------------------------------------------------------------------------Question2)Whatwillhappenwhenyouattempttocompileandrunthiscode?publicclassMyMain{publicstaticvoidmain(Stringargv){System.out.println("Hellocruelworld");}}1)Thecompilerwillcompl

4、ainthatmainisareservedwordandcannotbeusedforaclass2)Thecodewillcompileandwhenrunwillprintout"Hellocruelworld"3)Thecodewillcompilebutwillcomplainatruntimethatnoconstructorisdefined4)ThecodewillcompilebutwillcomplainatruntimethatmainisnotcorrectlydefinedAnswertoQuestion2-------------------------------

5、-------------------------------------------------Question3)WhichofthefollowingareJavamodifiers?1)public2)private3)friendly4)transient5)vagrantAnswertoQuestion3--------------------------------------------------------------------------------Question4)Whatwillhappenwhenyouattempttocompileandrunthiscode

6、?classBase{abstractpublicvoidmyfunc();publicvoidanother(){System.out.println("Anothermethod");}}publicclassAbsextendsBase{publicstaticvoidmain(Stringargv[]){Absa=newAbs();a.amethod();}publicvoidmyfunc(){System.out.println("Myfunc");}publicvoidamethod(){myfunc();}}1)Thecodewillcompileandrun,printingo

7、utthewords"MyFunc"2)ThecompilerwillcomplainthattheBaseclassisnotdeclaredasabstract.3)ThecodewillcompilebutcomplainatruntimethattheBaseclasshasnonabstractmethods4)Thecompilerwillcomplainthatthemethodmy