311020040面向对象程序设计导论_双语_A闭_.pdf

311020040 面向对象程序设计导论 （双语）（A 闭） 2012-2013-1 一、单项选择题（本大题共30 小题，每小题2 分，共60 分） 提示：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，请将其代码填写在下表中。错选、多选或 未选均无分。 1、Which method must exist in every Java application? A. main B. paint C. begin D. init 2、Which of the following statements is (are) true about the use of an asterisk (*) in a Java import statement? I. It does not incur run-time overhead. II. It can be used to import multiple packages with a single statement. III. It can be used to import multiple classes with a single statement. A. I and III only B. III only C. I only D. I, II, and III 3、A difference between the methodsprint andprintln of the classjava.io.Pr intWriter is that A. print inserts a new line at the beginning of its output, butprintln does not B. println appends a new line to the end of its output, butprint does not C. println inserts a new line at the beginning of its output, butprint does not D. print appends a new line to the end of its output, butprintln does not 4、Suppose that the integer array list has been declared and initialized as follows ： private int[] list = { 10, 20, 30, 40, 50 }; public void mystery(int[] array) { int tmp = array[array.length - 1]; for (int i = 1; i array.length; i++) { array[i] = array[i - 1]; } array[0] = tmp; } Given this array, what is the effect of calling the method mystery(list) A. 10, 20, 30, 40, 50 B. 30, 40, 50, 10, 20 C. 20, 30, 40, 50, 10 D. 50, 10, 20, 30, 40 5、According to Javadoc convention, the first sentence of each