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@Ahtisham-1214 Ahtisham-1214 commented Nov 12, 2025

Why use trim() and isEmpty() when it can be done using isBlank()

Summary by CodeRabbit

  • Bug Fixes
    • Improved whitespace handling to correctly identify and treat whitespace-only strings as empty, with broader Unicode whitespace support.

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🚀 Hi @Ahtisham-1214!

Thank you for contributing to MyCMD. A maintainer will review your PR shortly. 🎉

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coderabbitai bot commented Nov 12, 2025

Walkthrough

Modified StringUtils.isEmpty() method to use s.isBlank() instead of s.trim().isEmpty(), changing whitespace evaluation to leverage isBlank()'s broader Unicode whitespace handling.

Changes

Cohort / File(s) Change Summary
Whitespace Check Modernization
src/main/java/com/mycmd/StringUtils.java
Replaced s.trim().isEmpty() with s.isBlank() in the isEmpty() method for improved Unicode whitespace handling

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

  • Verify that isBlank() semantics align with the method's intended behavior (whitespace-only strings now return true)
  • Confirm existing tests pass and no unexpected behavior changes downstream

Possibly related PRs

Suggested labels

good first issue, needs-review

Suggested reviewers

  • anshumanjadiya1102

Poem

🐰 A rabbit danced through whitespace bright,
Where isBlank() shines with Unicode light,
The trim-isEmpty days now fade away,
By modern Java upgrades made today,
Hop along, all is well! ✨

Pre-merge checks and finishing touches

❌ Failed checks (1 warning, 1 inconclusive)
Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. You can run @coderabbitai generate docstrings to improve docstring coverage.
Title check ❓ Inconclusive The title 'Remove method duplication' is vague and overly broad. While the PR does involve replacing trim().isEmpty() with isBlank(), the title doesn't convey this specific change and could apply to many different refactorings. Consider a more specific title like 'Replace trim().isEmpty() with isBlank()' or 'Simplify StringUtils.isEmpty() using isBlank()' to clearly communicate the actual change.
✅ Passed checks (1 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
✨ Finishing touches
  • 📝 Generate docstrings
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Post copyable unit tests in a comment

📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 0c578dc and 0f31f11.

📒 Files selected for processing (1)
  • src/main/java/com/mycmd/StringUtils.java (1 hunks)
🔇 Additional comments (1)
src/main/java/com/mycmd/StringUtils.java (1)

5-7: No call sites found—the method is currently unused.

Verification across all 85 Java files reveals that StringUtils.isEmpty() has zero usages in the codebase. All isEmpty() calls encountered are on built-in Java types (String, List), not on this utility method. This means:

  • The semantic change from trim().isEmpty() to isBlank() (broader Unicode whitespace handling) has no breaking change risk
  • The method appears to be a utility addition for future use

The method naming observation still stands as a design consideration: isEmpty() now checks for blank (whitespace-only) strings rather than strictly empty strings, which may be worth clarifying in documentation or via method naming (isBlank() / isNullOrBlank()).


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