1Z0-829 Handling Exceptions Practice Question
Given the following assertion: assert age >= 0 : "Age must be non-negative"; When is it appropriate to use assertions?
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
✓
To verify internal invariants of a private method.
Assertions are used to verify internal invariants of a private method during development and testing. They should not be used for argument validation in public methods, handling recoverable conditions, or validating external input. Therefore, option A is correct.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
To verify internal invariants of a private method.
Why this is correct
Assertions are perfect for internal consistency checks.
- ✗
To handle recoverable conditions like file not found.
Why it's wrong here
Use try-catch for recoverable conditions.
- ✗
To check parameters of a public API method.
Why it's wrong here
Parameters should be validated with IllegalArgumentException.
- ✗
To validate user input from an external system.
Why it's wrong here
Assertions can be disabled, so input should be validated with exceptions.
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