Question

Consider the two program segments below.

Segment1
int list[ ];
list = new int[100];
Segment 2
int list[ ] = new int[100];
Which of the following is a true statement about the comparison of Segment1 and Segment2?
(A) Segment1 declares list correctly. Segment2 declares list incorrectly.
(B) Segment1 declares list incorrectly. Segment2 declares list correctly.
(C) Both Segment1 and Segment2 declare list correctly.
(D) Both Segment1 and Segment2 declare list incorrectly

Answer 1

Segment1 incorrectly declares an array since it separates declaration and assignment, which is not permissible in Java. Segment2 correctly declares and initializes the array in a single step, following Java's syntax rules.

Step-by-step explanation:

Regarding the question of whether Segment1 or Segment2 correctly declares an array in Java, the true statement is that Segment1 declares the list incorrectly, while Segment2 declares the list correctly. In Java, the declaration and allocation of an array is done in a single step, such as int[] list = new int[100];. Segment1 attempts to split this into two separate steps; however, in Java, you cannot declare an array without specifying its size and later assign it using new. Therefore, Segment1 is incorrect because it does not follow Java's syntax rules for array declaration and initialization.

In contrast, Segment2 correctly declares and allocates space for an array named list with 100 integer elements. It adheres to Java's syntax and combines both the declaration of the array and the allocation of memory into a single step. Thus, the correct answer to the question is option (B): Segment1 declares list incorrectly. Segment2 declares list correctly.