java选择题练习附答案（国外英文资料）.docVIP

java选择题练习附答案（国外英文资料） Zhejiang university remote education e-commerce (undergraduate) JAVA mock tests Multiple-choice (the five blanks in each item, choose the correct answer, and fill out the serial number of the correct answer in dry at the back of the brackets, wrong to choose alternative, regression are not scoring.) 1, give the following code: The class Test { Private int m; Public static void fun () { / / some code... } } How to make member variable m directly accessible by function fun ()? A, change private int m to protected int m B, change private int m to public int m C, change private int m to static int m D, change private int m to int m Answer: C The following functions are public void example () {... The overloaded function of}? A, public void example (int m) {... } B, public int example () {... } C, public void example2 () {... } D, public int example (int m, float f) {... } Answer: A, D 3, give the following code snippet: Public class Base { Int w, x, y, z; Public Base (int a, int b) { X = a; Y = b; } Public Base (int a, int b, int c, int d) { / / assignment x = a, y = b W = d; Z = c; } } In the code description / / assignment x = a, which of the following code is correct for the following code? A, Base (A, b); B, x = a, y = B; C, x = a; Y = b; D, this (a, b); A: C, D 4, you have the following definition: String s = story; Which of the following expressions is legal? A, s + = books; B, char, c = s, [1]; C, int len is s.l ength; D, String t = s.t oLowerCase (); Answer: A, D What is the value of the main () function in Java? A, the String B, int C, char D, void Answer: D Which strings are the identifiers in Java? A, fieldname B, super C, 3 number D, # number E, $number Answer: A, E Which of the following are valid keywords in Java? A, const B, NULL, C, false D, this E, native Answer: A, C, D, E, Which of the following are the correct integer representations in Java? 22 A, B, 0 x22 C, 022 D, 22 h Answer: A, B, C In the following code segment, what is the