Use _ for unused variables

[koppor]

User description

Minor code updates

Mandatory checks

• I own the copyright of the code submitted and I license it under the MIT license
• [/] I manually tested my changes in running JabRef (always required)
• [/] I added JUnit tests for changes (if applicable)
• [/] I added screenshots in the PR description (if change is visible to the user)
• [/] I described the change in CHANGELOG.md in a way that is understandable for the average user (if change is visible to the user)
• [/] I checked the user documentation: Is the information available and up to date? If not, I created an issue at https://github.com/JabRef/user-documentation/issues or, even better, I submitted a pull request updating file(s) in https://github.com/JabRef/user-documentation/tree/main/en.

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PR Type

Enhancement

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Description

• Replace unused lambda parameters with underscore placeholder

• Improves code readability by explicitly marking unused variables

• Applies Java convention for discarded values

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Diagram Walkthrough

flowchart LR
  A["Lambda Parameters"] -- "Mark unused with _" --> B["Improved Code Clarity"]
  C["Event Handlers"] -- "Use _ for unused args" --> B

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File Walkthrough

Relevant files

Enhancement

MultiMergeEntriesView.java Replace unused lambda parameters with underscore                  jabgui/src/main/java/org/jabref/gui/mergeentries/multiwaymerge/MultiMergeEntriesView.java Replace unused observable and oldValue parameters with _ in sourceButton.selectedProperty().addListener() lambda Replace unused event parameter with _ in doiButton.setOnAction() lambda Improves code readability by explicitly marking discarded parameters +2/-2

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[qodo-free-for-open-source-projects]

PR Compliance Guide 🔍

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Security Compliance
🟢	No security concerns identified No security vulnerabilities detected by AI analysis. Human verification advised for critical code.
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🟢	Generic: Comprehensive Audit Trails Objective: To create a detailed and reliable record of critical system actions for security analysis and compliance. Status: Passed Learn more about managing compliance generic rules or creating your own custom rules
	Generic: Meaningful Naming and Self-Documenting Code Objective: Ensure all identifiers clearly express their purpose and intent, making code self-documenting Status: Passed Learn more about managing compliance generic rules or creating your own custom rules
	Generic: Robust Error Handling and Edge Case Management Objective: Ensure comprehensive error handling that provides meaningful context and graceful degradation Status: Passed Learn more about managing compliance generic rules or creating your own custom rules
	Generic: Secure Error Handling Objective: To prevent the leakage of sensitive system information through error messages while providing sufficient detail for internal debugging. Status: Passed Learn more about managing compliance generic rules or creating your own custom rules
	Generic: Secure Logging Practices Objective: To ensure logs are useful for debugging and auditing without exposing sensitive information like PII, PHI, or cardholder data. Status: Passed Learn more about managing compliance generic rules or creating your own custom rules
	Generic: Security-First Input Validation and Data Handling Objective: Ensure all data inputs are validated, sanitized, and handled securely to prevent vulnerabilities Status: Passed Learn more about managing compliance generic rules or creating your own custom rules
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[qodo-free-for-open-source-projects]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Possible issue	Fix invalid lambda parameter syntax Revert the lambda parameters from (_, , newValue) to (observable, oldValue, newValue), as using duplicate parameter names is invalid Java syntax and will cause a compilation error. jabgui/src/main/java/org/jabref/gui/mergeentries/multiwaymerge/MultiMergeEntriesView.java [235] -sourceButton.selectedProperty().addListener((_, _, newValue) -> { +sourceButton.selectedProperty().addListener((observable, oldValue, newValue) -> { Apply / Chat Suggestion importance[1-10]: 10 __ Why: The suggestion correctly identifies that the PR introduces a compilation error, as using multiple underscores for different lambda parameters is invalid Java syntax. Reverting this change is critical to ensure the code compiles.	High
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