1Z0-811 Exception Handling and Development Tools Practice Question
A developer encounters an ArrayIndexOutOfBoundsException while running a unit test. The stack trace shows the error occurs in a method that is called from many places. Which tool or technique would most efficiently identify the specific call path?
⚠ Common exam trap
Oracle often tests the misconception that static analysis tools can identify runtime call paths, but they only detect potential code issues, not the specific execution flow that leads to an exception.
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
✓
Set a breakpoint in the method and debug the test.
Setting a breakpoint in the method and debugging the test allows the developer to inspect the call stack at runtime, immediately revealing the exact sequence of method invocations that led to the ArrayIndexOutOfBoundsException. This is the most efficient approach because it directly captures the specific call path without requiring manual tracing or post-hoc analysis.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Review the code manually to trace all possible callers.
Why it's wrong here
This is time-consuming and error-prone.
- ✓
Set a breakpoint in the method and debug the test.
Why this is correct
Debugging allows inspection of the call stack and variables.
- ✗
Run a static analysis tool to detect the issue.
Why it's wrong here
Static analysis cannot reproduce the exact runtime call path.
- ✗
Add log statements at the beginning of the method.
Why it's wrong here
This requires code changes and recompilation.
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