Quick Answer
The answer is A. The enhanced for loop with break immediately terminates the entire loop when the condition s.equals("B") is true, so only "A" is printed before the loop exits. This demonstrates that the break statement works identically in an enhanced for loop as it does in a traditional for loop—it stops iteration and control jumps to the first line after the loop. On the Oracle Certified Professional Java SE 17 Developer 1Z0-829 exam, this concept tests your understanding of loop control flow within the for-each construct, a common topic in the "Controlling Program Flow" objective. A frequent trap is assuming break only skips the current iteration like continue, but break exits the loop entirely. Memory tip: think of break as a "brick wall" that stops the enhanced for loop dead in its tracks.
This 1Z0-829 practice question tests your understanding of controlling program flow. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A method uses an enhanced for loop to iterate over a list of strings and prints each string. The code is:
```java List<String> list = List.of("A", "B", "C");
for (String s : list) {
if (s.equals("B")) {break;
}
System.out.print(s);
}
```
What is the result?
The code throws a ConcurrentModificationException.
Why wrong: The list is not modified during iteration.
ABC
Why wrong: Break prevents printing B and C.
A
Prints A, then breaks at B.
AB
Why wrong: Break occurs before printing B.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
A
The enhanced for loop iterates over the list, and when it encounters the string "B", the break statement immediately exits the loop. Therefore, only "A" is printed before the loop terminates. Option C is correct because the output is just "A".
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The code throws a ConcurrentModificationException.
Why it's wrong here
The list is not modified during iteration.
ABC
Why it's wrong here
Break prevents printing B and C.
A
Why this is correct
Prints A, then breaks at B.
Related concept
Read the scenario before looking for a memorised answer.
AB
Why it's wrong here
Break occurs before printing B.
Common exam traps
The trap here is that candidates may think the break statement causes a ConcurrentModificationException or that it prints "AB" because they forget that break exits the loop before executing the print statement for the matched element.
Detailed technical explanation
The enhanced for loop internally uses an Iterator, but the break statement simply exits the loop without calling any iterator methods. This is safe and does not trigger a ConcurrentModificationException, which only occurs if the collection is structurally modified (e.g., add or remove) during iteration. In real-world scenarios, using break to exit early is common when searching for a specific element, and understanding that it does not affect the iterator's fail-fast behavior is crucial.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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FAQ
Controlling Program Flow — This question tests Controlling Program Flow — Read the scenario before looking for a memorised answer..
The correct answer is: A — The enhanced for loop iterates over the list, and when it encounters the string "B", the break statement immediately exits the loop. Therefore, only "A" is printed before the loop terminates. Option C is correct because the output is just "A".
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This 1Z0-829 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-829 exam.
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