Which of the following code gives error of “out of bounds” in array?

To determine which code gives an "out of bounds" error, we need to check if any array index accessed is outside the valid range (0 to length-1).

Option A: int[] a = new int[5]; a[4] = 5;

Step 1: Array a has size 5, so valid indices are 0, 1, 2, 3, 4.

Step 2: a[4] accesses the last valid index.

Step 3: This is within bounds, so no out of bounds error.

Option B: int[] a = {1, 2, 3, 4, 5}; System.out.print(a[2]);

Step 1: Array a has size 5, valid indices 0 to 4.

Step 2: a[2] accesses index 2, which is valid.

Step 3: No out of bounds error occurs.

Option C: int[] a = new int[10]; for (int i = 0; i < a.length; i++) { a[i] = i * 2; }

Step 1: Array a has size 10, valid indices 0 to 9.

Step 2: Loop runs from i = 0 to i < 10, so i takes values 0 to 9.

Step 3: a[i] accesses valid indices, so no out of bounds error.

Option D: int[] a = new int[3]; a[3] = 9;

Step 1: Array a has size 3, valid indices 0, 1, 2.

Step 2: a[3] attempts to access index 3, which is beyond the last valid index.

Step 3: This causes an out of bounds error.