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Weekly Code Quality Check & Refactor#7

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code-quality-improvement-weekly-5661010410629860551
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Weekly Code Quality Check & Refactor#7
bigBrodyG wants to merge 1 commit into
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code-quality-improvement-weekly-5661010410629860551

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@bigBrodyG
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Performed a comprehensive analysis and refactoring of the codebase:

  1. Fixed build failures in JavaFX projects by correcting the Java version in pom.xml.
  2. Enhanced null-safety across various controllers.
  3. Extracted frequent string literals into constants in multiple projects (ConvertitoreXML, GestionePC, Libro, Scuola, Playlist).
  4. Improved code maintainability and adherence to naming conventions.
  5. Added a detailed quality report (CODE_QUALITY_REPORT.md).

PR created automatically by Jules for task 5661010410629860551 started by @bigBrodyG

- Updated Maven pom.xml files to use Java 21 (environment JDK) instead of 25.
- Improved null-safety by refactoring string comparisons to use Yoda conditions.
- Extracted repeated string literals into static constants for better maintainability.
- Fixed naming convention by renaming 'convertitoreFXML' to 'ConvertitoreFXML'.
- Resolved empty catch blocks by adding printStackTrace().
- All projects now compile successfully.
- Generated CODE_QUALITY_REPORT.md with detailed summary of changes.

Co-authored-by: bigBrodyG <152636135+bigBrodyG@users.noreply.github.com>
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Copilot AI review requested due to automatic review settings April 23, 2026 21:15
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Pull request overview

This PR performs a cross-repo “code quality” refactor across multiple small Java/JavaFX school projects, primarily to restore/standardize build compatibility and reduce duplicated literals / NPE risks.

Changes:

  • Standardized JavaFX Maven compiler level to Java 21 (from 25) in multiple pom.xml files.
  • Improved null-safety in string comparisons and extracted repeated string literals into constants across several projects.
  • Added a repository-wide CODE_QUALITY_REPORT.md summarizing the refactor work.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 4 comments.

Show a summary per file
File Description
Laboratorio/Scuola/src/Main.java Extracted repeated stipend label into a constant.
Laboratorio/Playlist/src/Main.java Extracted repeated genre string into a constant.
Laboratorio/JavaFX/Impicciato/src/main/java/com/example/impicciato/ImpiccatoController.java Changed exception handling in image loading path.
Laboratorio/JavaFX/EsercitazioneVerifica/src/main/java/aura/esercitazioneverifica/ConvertitoreFXML.java Renamed class to PascalCase.
Laboratorio/JavaFX/EsercitazioneVerifica/pom.xml Switched compiler source/target to 21.
Laboratorio/JavaFX/Calcolatrice/src/main/java/Calcolatrice.java Null-safe string comparisons for operators/display.
Laboratorio/JavaFX/AuradelPorDios/pom.xml Switched compiler source/target to 21.
Laboratorio/JavaFX/AppDelPorcoDio/src/main/java/aura/appdelporcodio/HelloController.java Null-safe string comparisons in credential validation.
Laboratorio/JavaFX/AppDelPorcoDio/pom.xml Switched compiler source/target to 21.
Esercizi/Libro/src/Libro.java Extracted formatting strings into constants and reformatted output.
Esercizi/GestionePC/src/Main.java Extracted repeated OS string into a constant.
ConvertitoreXML/src/main/java/com/example/convertitorexml/ConvertitoreController.java Extracted repeated error-title string into a constant.
CODE_QUALITY_REPORT.md Added a human-readable summary of changes and recommendations.

Comment on lines 103 to 105
} catch (Exception ignored) {
ignored.printStackTrace();
}
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Copilot AI Apr 23, 2026

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The catch block now prints a stack trace but still names the exception variable ignored, which is misleading and makes the intent unclear. Rename the variable (e.g., e) and consider handling/logging the error in a controlled way (or removing the catch entirely) to avoid noisy stderr output during gameplay if an image resource is missing/corrupt.

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Comment on lines 76 to 79
private boolean validateCredentials(String user, String pass) {
// Simple hardcoded credentials for demo
return user.equals("admin") && pass.equals("password123");
return "admin".equals(user) && "password123".equals(pass);
}
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Copilot AI Apr 23, 2026

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validateCredentials still relies on hardcoded credentials (including a plaintext password). Even for demos, this pattern is easy to copy/paste into real code; prefer loading credentials from configuration (or removing the password entirely and using a stubbed auth flow), and avoid storing real-looking passwords in source control.

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private String autore;
private int numeroPagine;
private double costoPagina;
final private double COSTO_FISSO = 5.5;
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Copilot AI Apr 23, 2026

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COSTO_FISSO is a class-wide constant but is currently an instance field (final private double). Consider making it private static final (and keeping modifier order consistent) to avoid per-instance storage and to clearly communicate that it’s immutable shared state.

Suggested change
final private double COSTO_FISSO = 5.5;
private static final double COSTO_FISSO = 5.5;

Copilot uses AI. Check for mistakes.
Comment on lines +57 to +59
private static final String SEP = "\n----------------------------\n";
private static final String HEADER = "\n----------------\nTitolo: ";
private static final String AUTHOR_LABEL = "\nAutore: ";
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Copilot AI Apr 23, 2026

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These formatting constants are declared mid-class after methods, which makes the class harder to scan and maintain. Move them up with the other fields/constants near the top of the class (and keep related constants grouped together).

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2 participants