- A
Use a multi-catch: catch (FileNotFoundException | IOException e).
Why wrong: Multi-catch is valid but does not demonstrate proper ordering because both exceptions are in the same catch block. It is not incorrect but does not answer the ordering question.
- B
catch (IOException e) first, then catch (FileNotFoundException e).
Why wrong: This will cause a compilation error because FileNotFoundException is a subclass of IOException and the first catch will catch all IOException, making the second unreachable.
- C
catch (FileNotFoundException e) first, then catch (IOException e).
This is correct because the more specific exception must be caught before the more general one.
- D
Use a single catch (Exception e).
Why wrong: This is too broad and catches all exceptions, not just IOExceptions.
1Z0-811 Exception Handling and Development Tools Practice Question
This 1Z0-811 practice question tests your understanding of exception handling and development tools. 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 needs to handle a specific checked exception, FileNotFoundException, but also wants to catch any other IOException that might occur. Which catch block ordering is correct?
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
catch (FileNotFoundException e) first, then catch (IOException e).
Option C is correct because checked exceptions must be caught in order from most specific to most general. FileNotFoundException is a subclass of IOException, so it must be caught first; otherwise, the more specific catch block would be unreachable and cause a compilation error. This ordering ensures that the developer can handle the specific FileNotFoundException separately while still catching any other IOException in the second block.
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 multi-catch: catch (FileNotFoundException | IOException e).
Why it's wrong here
Multi-catch is valid but does not demonstrate proper ordering because both exceptions are in the same catch block. It is not incorrect but does not answer the ordering question.
- ✗
catch (IOException e) first, then catch (FileNotFoundException e).
Why it's wrong here
This will cause a compilation error because FileNotFoundException is a subclass of IOException and the first catch will catch all IOException, making the second unreachable.
- ✓
catch (FileNotFoundException e) first, then catch (IOException e).
Why this is correct
This is correct because the more specific exception must be caught before the more general one.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a single catch (Exception e).
Why it's wrong here
This is too broad and catches all exceptions, not just IOExceptions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think multi-catch can combine any exception types, but the compiler forbids combining a parent and child exception in the same multi-catch clause, and also forbids catching a parent before a child in separate catch blocks.
Detailed technical explanation
How to think about this question
Under the hood, the Java compiler enforces catch block ordering at compile time by checking the inheritance hierarchy of exception types. If a more general exception is caught before a more specific one, the specific catch block is considered dead code and the compiler rejects it. In real-world scenarios, such as reading a configuration file from disk, you might want to log a specific message for FileNotFoundException (e.g., 'Config file missing') while handling other IOExceptions with a generic retry logic.
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 1Z0-811 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 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 1Z0-811 question test?
Exception Handling and Development Tools — This question tests Exception Handling and Development Tools — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: catch (FileNotFoundException e) first, then catch (IOException e). — Option C is correct because checked exceptions must be caught in order from most specific to most general. FileNotFoundException is a subclass of IOException, so it must be caught first; otherwise, the more specific catch block would be unreachable and cause a compilation error. This ordering ensures that the developer can handle the specific FileNotFoundException separately while still catching any other IOException in the second block.
What should I do if I get this 1Z0-811 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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