- A
Catch the RuntimeException in the main processing loop and print the cause's message using getCause().getMessage().
Why wrong: This workaround does not fix the root cause and may miss other places where the exception is logged.
- B
Modify the exception wrapping code to pass the original TradeException as a cause to the RuntimeException constructor.
Using the cause constructor preserves the original exception in the cause chain.
- C
Modify the TradeException class to extend RuntimeException.
Why wrong: Changing the exception type may break existing method signatures that declare checked exceptions.
- D
Override the getMessage() method in TradeException to return the original message.
Why wrong: The wrapper's getMessage() is used, not the original's.
Question 40 of 519
1Z0-829 Handling Exceptions Practice Question
This 1Z0-829 practice question tests your understanding of handling exceptions. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 financial trading application uses Java 17 and processes millions of transactions per second. It uses a custom checked exception `TradeException extends Exception` for business rule violations. Recently, the transaction processing service began throwing a `RuntimeException` that wraps a `TradeException`, but the error logs only show the wrapper's message and stack trace, missing the original `TradeException` details. The logging framework prints the exception and its cause chain. The development team needs to ensure that the original `TradeException` message and stack trace are always logged. What is the most appropriate course of action?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"always"Why it matters: Absolute qualifier. An answer using 'always' is only correct if there are genuinely no exceptions — absolute statements are often wrong in networking.
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
✓
Modify the exception wrapping code to pass the original TradeException as a cause to the RuntimeException constructor.
Option B is correct because passing the original `TradeException` as the cause argument to the `RuntimeException` constructor (e.g., `new RuntimeException(message, cause)`) preserves the full cause chain. The logging framework, which prints the exception and its cause chain, will then output both the wrapper's stack trace and the original `TradeException`'s message and stack trace, ensuring complete visibility.
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.
- ✗
Catch the RuntimeException in the main processing loop and print the cause's message using getCause().getMessage().
Why it's wrong here
This workaround does not fix the root cause and may miss other places where the exception is logged.
- ✓
Modify the exception wrapping code to pass the original TradeException as a cause to the RuntimeException constructor.
Why this is correct
Using the cause constructor preserves the original exception in the cause chain.
Clue confirmation
The clue word "always" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Modify the TradeException class to extend RuntimeException.
Why it's wrong here
Changing the exception type may break existing method signatures that declare checked exceptions.
- ✗
Override the getMessage() method in TradeException to return the original message.
Why it's wrong here
The wrapper's getMessage() is used, not the original's.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think catching the wrapper and manually extracting the cause's message (Option A) is sufficient, but they overlook that the logging framework needs the full cause chain to print the original stack trace, not just the message string.
Detailed technical explanation
How to think about this question
In Java, the `Throwable` class supports a cause chain via the `cause` field, which is set through constructors like `RuntimeException(String message, Throwable cause)`. When a logging framework (e.g., Log4j, SLF4J) logs an exception, it typically iterates through the cause chain using `getCause()` and prints each nested exception's stack trace. Without passing the original exception as the cause, the wrapper `RuntimeException` has a null cause, so the original `TradeException` details are lost. This pattern is critical in high-throughput systems where preserving diagnostic information without altering exception types is essential for debugging.
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.
TExam Day Tips
- 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 1Z0-829 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this 1Z0-829 question test?
Handling Exceptions — This question tests Handling Exceptions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Modify the exception wrapping code to pass the original TradeException as a cause to the RuntimeException constructor. — Option B is correct because passing the original `TradeException` as the cause argument to the `RuntimeException` constructor (e.g., `new RuntimeException(message, cause)`) preserves the full cause chain. The logging framework, which prints the exception and its cause chain, will then output both the wrapper's stack trace and the original `TradeException`'s message and stack trace, ensuring complete visibility.
What should I do if I get this 1Z0-829 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "always". Absolute qualifier. An answer using 'always' is only correct if there are genuinely no exceptions — absolute statements are often wrong in networking.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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