《Java程序设计基础本部(A).docVIP

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： A 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 40 20 20 10 10 得分 得分 I、Choose one correct answer（Total 40 points，each question 2 points） Which of the following are Java modifiers? ( A ) A. public B. true C. friendly D. transient 2.? Which is true? ( C ) X extends Y is correct if and only if X is a class and Y is an interface. X extends Y is correct if and only if X is an interface and Y is a class. X extends Y is correct if X and Y are either both classes or both interfaces. X extends Y is correct for all combinations of X and Y being classes and/or interfaces. 3.? Which are valid declarations? ( A ) A. int $x; B. int 123; C. int %percent; D. int *divide; Given the following code: class Clidders { public final void flipper() { System.out.println(Clidder); } } public class Clidlets extends Clidders { public void flipper() { System.out.println(Flip a Clidlet); super.flipper(); } public static void main(String [] args) { new Clidlets().flipper(); } } What is the result? ( A ) A.Flip a Clidlet B.Flip a Clidder C.Compilation fails D. Flip a Clidlet Flip a Clidder 5. What is the return value of the main() method in Java? ( D ) A. String B. int C. char D. void 6. Which of the following assignments is NOT legal? ( A ) A.float a = 2.0 B.double b = 2.0 C.int c = 2 D.long d = 2 7. Given the following command to run a correct class: java MyTest a b cWhich statement is true? ( D ) A. args[0] = MyTest a b c B. args[0] = MyTest C. args[0] = a D. args[1]= “b” 8. Give this class outline: class Example{ private int x; //rest of class body… } Assuming that x invoked by the code java Example, which statement