Quick Answer
The answer is the exception from the try block. This occurs because the try-with-resources statement is designed to preserve the primary failure; when both the try block and the close() method throw exceptions, the close() exception is not lost but is instead suppressed and added to the try block’s exception via Throwable.addSuppressed(). This behavior, specified by JLS §14.20.3.2, ensures that the root cause of the problem is not masked by a secondary failure during resource cleanup. On the Oracle Certified Professional Java SE 17 Developer 1Z0-829 exam, this concept frequently appears in questions about exception handling and resource management, often as a trap where candidates mistakenly think the close() exception replaces the try block exception. A reliable memory tip is to think of the try block as the “boss” exception—it always gets thrown, while any close() exceptions are demoted to its “suppressed” list.
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 resource is declared in a try-with-resources statement. The try block throws an exception. The close method throws a different exception. What exception is thrown by the try-with-resources statement?
The exception from the close method.
Why wrong: The close exception is added to the suppressed list, not thrown.
The exception from the try block.
The try block exception is the primary exception; the close exception is suppressed.
A compilation error occurs.
Why wrong: This code is valid.
Both exceptions are thrown simultaneously.
Why wrong: Only one exception is thrown; the other is suppressed.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The exception from the try block.
In a try-with-resources statement, if both the try block and the close() method throw exceptions, the exception from the try block is the one thrown by the statement. The exception from close() is suppressed and added to the thrown exception's suppressed exception list (via Throwable.addSuppressed()). This is specified by JLS §14.20.3.2 and ensures the primary failure (the try block exception) is not masked.
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 exception from the close method.
Why it's wrong here
The close exception is added to the suppressed list, not thrown.
The exception from the try block.
Why this is correct
The try block exception is the primary exception; the close exception is suppressed.
Related concept
Read the scenario before looking for a memorised answer.
A compilation error occurs.
Why it's wrong here
This code is valid.
Both exceptions are thrown simultaneously.
Why it's wrong here
Only one exception is thrown; the other is suppressed.
Common exam traps
The trap here is that candidates often assume the last exception thrown (from close()) overrides the earlier one, or that both exceptions are thrown simultaneously, but Java's suppressed exception mechanism ensures the try block's exception is primary and close() exceptions are silently attached.
Detailed technical explanation
Under the hood, the try-with-resources statement generates bytecode that uses a finally block to call close() on each resource. If close() throws an exception after the try block threw one, the close() exception is caught and added to the primary exception's suppressed list via Throwable.addSuppressed(). This mechanism is crucial in real-world scenarios like database connections, where a SQLException from the try block (e.g., query failure) must not be lost if closing the connection also fails.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
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: The exception from the try block. — In a try-with-resources statement, if both the try block and the close() method throw exceptions, the exception from the try block is the one thrown by the statement. The exception from close() is suppressed and added to the thrown exception's suppressed exception list (via Throwable.addSuppressed()). This is specified by JLS §14.20.3.2 and ensures the primary failure (the try block exception) is not masked.
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
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