Handling Exceptions →easyMultiple ChoiceObjective-mapped

1Z0-829 Handling Exceptions Practice Question

A method reads a file and throws IOException. Which of the following is the correct way to declare the method?

⚠ Common exam trap

Test-takers frequently confuse checked and unchecked exceptions, or think that declaring a broader exception like Exception is acceptable, but the exam tests precise exception handling where the exact checked exception must be declared.

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

✓

public void readFile() throws IOException { ... }

The method explicitly declares that it throws IOException, which is a checked exception. In Java, if a method can throw a checked exception like IOException, it must either handle it with a try-catch block or declare it in the throws clause. This allows the caller to handle the exception appropriately.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
public void readFile() throws RuntimeException { ... }
Why it's wrong here
Wrong exception type; IOException is checked.
✗
public void readFile() throws Exception { ... }
Why it's wrong here
Too generic; should be specific IOException.
✗
public void readFile() { ... } // assumes try-catch inside
Why it's wrong here
Must handle or declare the checked exception.
✓
public void readFile() throws IOException { ... }
Why this is correct
Correctly declares IOException.

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1Z0-829 Handling Exceptions Practice Question

Why each option matters

Option-by-option breakdown

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