1Z0-829 Handling Exceptions Practice Question
Which TWO of the following are unchecked exceptions? (Choose two.)
⚠ Common exam trap
A common mix-up: candidates confuse 'Exception' (the superclass) as unchecked, but Exception itself is a checked exception; only RuntimeException and its subclasses are unchecked.
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
✓
NullPointerException
NullPointerException (option C) is an unchecked exception because it extends RuntimeException, which means it is not checked at compile time. The Java compiler does not require you to handle or declare NullPointerException, making it an unchecked exception.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
SQLException
Why it's wrong here
SQLException is a checked exception; it extends Exception directly and must be handled or declared.
- ✗
Exception
Why it's wrong here
Exception is the superclass of all checked exceptions (except RuntimeException), so it is a checked exception and must be handled or declared.
- ✓
NullPointerException
Why this is correct
NullPointerException extends RuntimeException, making it an unchecked exception. It does not need to be handled or declared.
- ✓
ArrayIndexOutOfBoundsException
Why this is correct
ArrayIndexOutOfBoundsException extends RuntimeException, making it an unchecked exception. It does not need to be handled or declared.
- ✗
IOException
Why it's wrong here
IOException is a checked exception; it extends Exception directly and must be handled or declared.
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