Given the code fragment:
Int [] [] array = {{0}, {0, 1}, {0, 2, 4}, {0, 3, 6, 9}, {0, 4, 8, 12, 16}};
Systemout.printIn(array [4] [1]);
System.out.printIn (array) [1] [4]);
What is the result?
A. 4
Null
B. Null
4
C. An IllegalArgumentException is thrown at run time
D. 4
An ArrayIndexOutOfBoundException is thrown at run time
Correct Answer: D
Explanation/Reference:
Explanation:
The first println statement, System.out.println(array [4][1]);, works fine. It selects the element/array with index 4, {0, 4, 8, 12, 16}, and from this array it selects the element with index 1, 4. Output: 4
The second println statement, System.out.println(array) [1][4]);, fails. It selects the array/element with index 1, {0, 1}, and from this array it try to select the element with index 4. This causes an exception.
Output:
4
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
|
Download Printable PDF. VALID exam to help you PASS.
|
 |
