Expected Behavior
- All checks for empty Collections (Lists, Maps, etc.) should use the .isEmpty() method instead of .size() == 0.
Current Behavior
- The current codebase uses .size() == 0 to check if Lists and Maps are empty.
Context
- This issue affects code readability and adherence to Java Collections Framework conventions.
- We are trying to improve code clarity and follow best practices in Java programming.
- Alternatives considered: Keeping the current .size() == 0 checks, but this doesn't align with standard Java conventions.
- No workarounds are necessary as both methods are functionally equivalent for checking emptiness.
Proposed Changes
1. Replace all occurrences of .size() == 0 with .isEmpty() for Collections (Lists, Maps, etc.).
2. Update any related documentation or coding guidelines to reflect this change.
Reasons for the proposed change:
1. Improved readability: .isEmpty() more clearly expresses the intent of checking whether a collection is empty.
2. Adherence to Java Collections Framework conventions: isEmpty() is the standard method for checking if a collection is empty.
Questions
- Is there a specific reason for using size() == 0 instead of isEmpty() in our current codebase?
Comment From: kwonyonghyun
I've submitted PR #15898 to address this issue. I would greatly appreciate if you could review the changes and provide your feedback. Please take a look at the implementation and let me know if you have any concerns or if there are any reasons why this change might not be feasible.