- A
Use a try-catch inside a loop that continues if exception caught, and breaks if input equals 'quit' or conversion succeeds.
Correct: handles exception, allows retry, and exits on 'quit'.
- B
Catch the exception and ignore it; the loop will naturally terminate.
Why wrong: Ignoring exception leaves the input invalid; loop may continue indefinitely.
- C
Use a do-while loop that never checks for 'quit'; the exception is caught outside the loop.
Why wrong: No exit condition; endless on invalid input.
- D
Catch the exception in the loop and call System.exit(0) immediately.
Why wrong: Exits the entire application, not prompting for retry.
Question 476 of 509
1Z0-811 Java Basics and Syntax Practice Question
This 1Z0-811 practice question tests your understanding of java basics and syntax. 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 developer is working on a Java application that processes user input. The application reads an integer from the command line using args[0], converts it to an int, and uses it in a loop. When testing, the application throws a NumberFormatException when the user provides an alphabetic string. The developer needs to handle this exception gracefully by prompting the user to enter a valid number and retrying. However, the developer must avoid infinite loops. The current code uses a while loop with a flag. Which approach ensures the code handles the exception, provides feedback, and terminates if the user enters 'quit'? The environment is a standard Java SE 11 application. The developer wants a robust solution without using external libraries.
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
✓
Use a try-catch inside a loop that continues if exception caught, and breaks if input equals 'quit' or conversion succeeds.
Option A is correct because it uses a try-catch inside a while loop that continues if an exception is caught, allowing the user to re-enter input. The loop also checks if the input equals 'quit' to break out, ensuring the program can terminate gracefully. This approach provides feedback (prompting the user) and avoids infinite loops. Option B is incorrect because ignoring the exception would not provide feedback or allow retry. Option C is incorrect because it never checks for 'quit', risking an infinite loop. Option D is incorrect because calling System.exit(0) terminates the program abruptly, which is not graceful.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use a try-catch inside a loop that continues if exception caught, and breaks if input equals 'quit' or conversion succeeds.
Why this is correct
Correct: handles exception, allows retry, and exits on 'quit'.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Catch the exception and ignore it; the loop will naturally terminate.
Why it's wrong here
Ignoring exception leaves the input invalid; loop may continue indefinitely.
- ✗
Use a do-while loop that never checks for 'quit'; the exception is caught outside the loop.
Why it's wrong here
No exit condition; endless on invalid input.
- ✗
Catch the exception in the loop and call System.exit(0) immediately.
Why it's wrong here
Exits the entire application, not prompting for retry.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-811 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 1Z0-811 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this 1Z0-811 question test?
Java Basics and Syntax — This question tests Java Basics and Syntax — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use a try-catch inside a loop that continues if exception caught, and breaks if input equals 'quit' or conversion succeeds. — Option A is correct because it uses a try-catch inside a while loop that continues if an exception is caught, allowing the user to re-enter input. The loop also checks if the input equals 'quit' to break out, ensuring the program can terminate gracefully. This approach provides feedback (prompting the user) and avoids infinite loops. Option B is incorrect because ignoring the exception would not provide feedback or allow retry. Option C is incorrect because it never checks for 'quit', risking an infinite loop. Option D is incorrect because calling System.exit(0) terminates the program abruptly, which is not graceful.
What should I do if I get this 1Z0-811 question wrong?
Identify which 1Z0-811 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 23, 2026
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