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MCQs

Total Questions : 14 | Page 2 of 2 pages
Question 11. What would be the result of attempting to compile and run the following code?public class HelloWorld{ public static void main(String[] args){ double[] x = new double[]{1, 2, 3}; System.out.println("Value is " + x[1]); }}
  1.    The program has a compile error because the syntax new double[]{1, 2, 3} is wrong and it should be replaced by new double[3]{1, 2, 3};
  2.    The program compiles and runs fine and the output
  3.    The program has a compile error because the syntax new double[]{1, 2, 3} is wrong and it should be replaced by {1, 2, 3}.
  4.    The program has a compile error because the syntax new double[]{1, 2, 3} is wrong and it should be replaced by new double[]{1.0, 2.0, 3.0};
 Discuss Question
Answer: Option B. -> The program compiles and runs fine and the output
Question 12. Which will legally declare, construct, and initialize an array?
  1.    int [] myList = (5, 8, 2);
  2.    int [] myList = {};
  3.    int myList [] [] = {4,9,7,0};
  4.    int myList [] = {4, 3, 7};
 Discuss Question
Answer: Option D. -> int myList [] = {4, 3, 7};
Question 13. What is the value of a[1] after the following code is executed?int[] a = {0, 2, 4, 1, 3};for(int i = 0; i < a.length; i++)a[i] = a[(a[i] + 3) % a.length];
  1.    3
  2.    1
  3.    2
  4.    4
  5.    0
 Discuss Question
Answer: Option B. -> 1
Question 14. What will be the output of the program?public class Test{ public static void main(String [] args){ String s1 = args[1]; String s2 = args[2]; String s3 = args[3]; String s4 = args[4]; System.out.print(" args[2] = " + s2); }}and the command-line invocation is C:Java> java Test 1 2 3 4
  1.    An exception is thrown at runtime.
  2.    args[2] = null
  3.    args[2] = 3
  4.    args[2] = 2
 Discuss Question
Answer: Option A. -> An exception is thrown at runtime.

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