JAVA全英试卷

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1、装订线华南农业大学期末考试试卷（A卷）2011-2012学年第2学期考试科目：面向对象程序设计考试类型：（闭卷）考试考试时间：120分钟学号姓名年级专业题号一二三四总分得分评阅人得分I．Singlechoice(60points)1．WhichofthefollowingstatementscompilesOK?A.String#name="JaneDoe";B.int$age=24;C.Double_height="123.5";D.double~temp=37.5;2．WhataretheextensionnamesofJavasourcefi

2、leandexecutablefile?A..javaand.exeB..jarand.classC..javaand.classD..jarand.exe3．Given:10.classCertKiller{11.staticvoidalpha(){/*morecodehere*/}12.voidbeta(){/*morecodehere*/}13.}Whichstatementiswrong?A.CertKiller.beta()isavalidinvocationofbeta()B.CertKiller.alpha()isavalidinvo

3、cationofalpha()C.Methodbeta()candirectlycallmethodalpha()D.Themethodbeta()canonlybecalledviareferencestoobjectsofCertKiller4．WhichmethodnamedoesnotfollowtheJavaBeansstandardonAccessor/Mutator?A.getSizeB.setCustC.notAvailableD.isReadable5．ReadthefollowingclassClassA,whichstatem

4、entiscorrectafterexecuting“newClassA().getValue();”publicclassClassA{publicintgetValue(){intvalue=0;booleansetting=true;Stringtitle="Hello";if(value

5、

6、(setting&&title=="Hello")){return1;}if(value==1&title.equals("Hello")){return2;}}}A.ThereiscompilationerrorforClassAB.Itoutputs

7、2C.Itoutputs1D.ExecutesOK,butnooutput9装订线1．Given:publicvoidtestIfA(){if(testIfB("true")){System.out.println("True");}else{System.out.println("Nottrue");}}publicBooleantestIfB(Stringstr){returnBoolean.valueOf(str);}WhatistheresultwhenmethodtestIfAisinvoked?A.TrueB.NottrueC.Anex

8、ceptionisthrownatruntimeD.Compilationfails2．Given:publicclassPass{publicstaticvoidmain(String[]args){intx=5;Passp=newPass();p.doStuff(x);System.out.print("mainx="+x);}voiddoStuff(intx){System.out.print("doStuffx="+x++);}}Whatistheresult?A.doStuffx=6mainx=6B.doStuffx=5mainx=5C.

9、doStuffx=5mainx=6D.doStuffx=6mainx=53．Given:Stringa="str";Stringb=newString("str");Stringc="str";System.out.print(a==b);System.out.print(a==c);Whatistheresult?A.truefalseB.truetrueC.falsetrueD.falsefalse4．Given:33.try{34.//smoecodehere35.}catch(NullPointerExceptionel){36.Syste

10、m.out.print("a");37.}catch(RuntimeExceptionel){38.System.out.