Control Flow and Loops →mediumMultiple ChoiceObjective-mapped

1Z0-811 Control Flow and Loops Practice Question

Exhibit

int[] data = {1, 2, 3, 4, 5};
int sum = 0;
for (int i = 0; i <= data.length; i++) {
    sum += data[i];
}
System.out.println(sum);

Given the code fragment:

```java int[] data = {1, 2, 3, 4, 5};

int sum = 0;
for (int i = 0; i <= data.length; i++) {

sum += data[i];

System.out.println(sum); ```

What is the result?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

ArrayIndexOutOfBoundsException

The loop condition i <= data.length causes i to become 5 when data.length is 5, but valid indices are 0-4. This results in an ArrayIndexOutOfBoundsException. Option A is wrong because the exception occurs before sum reaches 15. Option C is wrong because sum is not 0. Option D is wrong because the code compiles successfully.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
15
Why it's wrong here
The loop would attempt to access index 5, causing an exception before sum becomes 15.
✓
ArrayIndexOutOfBoundsException
Why this is correct
When i equals 5, data[5] is out of bounds, throwing an exception.
✗
0
Why it's wrong here
The sum is not 0; the loop runs and adds values until the exception.
✗
Compilation fails
Why it's wrong here
The code compiles without errors.

Go deeper

1Z0-811 Control Flow and Loops Practice Question

Exhibit

Why each option matters

Option-by-option breakdown

Related to this question