java程序设计基础本部(b)

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1、.装订线内不要答题，装订线外不要写姓名、学号、学院专业年级班签个人信息，违者试卷作0分处理考点号教室号姓名学院专业年级班号学号（全号）湖南农业大学课程考核试卷课程名称（全称）：Java程序设计基础（双语）课程代码：30656B0考核时间：2008年月日试卷号：B考核对象：信息工程05－1、信息工程05－2大题号一二三四五六七八九十总分题分4020201010得分得分I、Chooseonecorrectanswer（Total40points，eachquestion2points）1.WhichofthefollowingareJavamodifiers

2、?(A)A.publicB.trueC.friendlyD.transient2.Choosethevalididentifierfromthoselistedbelow.(A)A.MyMethodB.3byteC.5_constD.true3.Whicharelegaldeclarations?(ABD)A.shortx[];B.short[]y;C.short[]y2=[5];D.short[]z[][];4.Giventhefollowingcode:classTop{publicTop(Strings){System.out.print("B")

3、;}}publicclassBottom2extendsTop{publicBottom2(Strings){System.out.print("D");}publicstaticvoidmain(String[]args){newBottom2("C");System.out.println("");}}What’stheresultwhenwecompileandruntheprecedingcode?(D)A.BDB.DBC.BDCD.Compilationfails5.Whatisthereturnvalueofthemain()methodin

4、Java?(D)A.StringB.intC.charD.void6.Giventhefollowing,classX{voiddol(){}}classYextendsX{voiddo2(){}}...classChrome{publicstaticvoidmain(String[]args){Xx1=newX();Xx2=newY();Yy1=newY();//insertcodehere}}Which,insertedatline8,willcompile?(C)A.x2.do2();B.(Y)x2.do2();C.((Y)x2).do2();D.

5、Noneoftheabovestatementswillcompile.7.WhichofthefollowingassignmentsisNOTlegal?(A)A.floata=2.0B.doubleb=2.0C.intc=2D.longd=28.Giventhefollowingcommandtorunacorrectclass:javaMyTestabcWhichstatementistrue?(D)A.args[0]=MyTestabcB.args[0]=MyTestC.args[0]=aD.args[1]=“b”9.Giventhefollo

6、wingcode:switch(m){case0:System.out.println(Condition0);case1:System.out.println(Condition1);case2:System.out.println(Condition2);case3:System.out.println(Condition3);break;default:System.out.println(OtherCondition);}WhichvaluesofmwillcauseCondition2isoutput?(A)A.0,1and2B.only1C.

7、3D.410.WhichmodifierisNOTlegalinJava?(D)A.privateB.publicC.protectedD.protect11.Whichmethodisusedtodefinetheexecutionbodyofathread?(C)A.start()B.init()C.run()D.main()12.Giventhefollowingclassdefinitioninonesourcefile:classBase{publicBase(){//...}publicBase(intm){//...}protectedvo

8、idfun(intn){//...}}publicclassChildexten