Java(10专)C卷答案及评分标准.doc

济宁学院计算机科学系Java程序设计期末考试C参考答案及评分标准一、单项选择题（本大题共15，每小题2分，共30分）在每小题列出的四个备选项中只有一个是符合题目要求的，请将其代码填写在题后的括号内。错选、多选或未选均无分。12345678910BBDACCCACC1112131415BAABC二、填空1、编辑源程序、编译生成字节码、解释运行字节码2、Applet、MyApplet3、javac.exe、3、 . class4、2 、25、06、true 、 false7、抽象(abstract)方法、最终(final)方法8、package MyPackage ; 应该在程序第一句。 9、static double additoryFee = 0.1;10、单、多11、6三、程序结果（每空4分，共20分）1、s=50502、Hello! I love JAVA.3、s = 1804、a=60 b=20 c=305、11 31 41 61 71四.编程题（共两大题，每小题10分，共20分）1、参考程序如下：public class Sum public static void main( String args ) double sum = 0.0 ; for ( int i = 1 ; i = 100 ; i + + ) sum += 1.0/(double) i ; System.out.println( sum=+sum ); 2、参考程序如下：class Linght Private int watts; Private Boolean indicator; Linght(int watts)this.watts=watts; Light(int watts,Boolean indicator)this.watts=watts;this.indicator=indicator; public void switchOn()this.indicator=true; public void switchOff()this.indicator=false; pulic void printInfo() System.out.println(“watts=”+watts); System.out.println(“indicator =”+ indicator);Class TubeLight extends Light private int tubLength; private String; TubeLight(int watts,int tubeLigth,String color) super(watts); this.tubeLigth= tubeLigth; this.color=color; public void printinfo() super.printinfo();System.out.println(“tubeLight=”+ tubeLight); System.out.println(“color=”+ color); Class Test public static void main(String arg) TubeLight t1=new TubeLight(32,50,”白色”); T1.switchOn(); T1. printinfo();3 class PersonString name;char sex;int age;public Person(String name,char sex,int age)=name;this.sex=sex;this.age=age;class Student extends PersonString no;String enter;String major;public Student(String name;char sex;int age,String no,String enter,String major)super(name,sex,age);this.no=no;this.enter=enter;this.major=major;public String toString()return name+”，”+sex+”,”+age+”,”+no+”,”+enter+”,”+major;Class Teachar extends PersonString pro;String department;Public Teacher(String name,char sex,int age,String pro,String department)Super(name,sex,age);T=pro;This.department=department;Public String toString()Return name+”,”+sex+”,”+age+”,”+pro+”,”+department;Public class testPublic static void main(String args)Student no1=new Student(“no1”,w,20,”001”,”2009/9/12”,”computer”);