Update copyright year to 2025 across project files

[Copilot]

Description

Updates copyright statements from 2023 to 2025 for legal compliance and project currency.

Changes:

• LICENSE: 2014-2023 → 2014-2025
• 190 Java source files: 2016-2023 → 2016-2025

Project uses standard google_checks.xml for Checkstyle, which requires no copyright year configuration changes.

Resolves #(issue)

Checklist:

• Public methods are documented
• Public methods are tested
• New and existing tests pass when run locally
• There are no new warnings or errors

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• checkstyle.org
  • Triggering command: /opt/hostedtoolcache/CodeQL/2.23.3/x64/codeql/tools/linux64/java/bin/java -jar /opt/hostedtoolcache/CodeQL/2.23.3/x64/codeql/xml/tools/xml-extractor.jar --fileList=/home/REDACTED/work/xapi-java/.codeql-scratch/dbs/java/working/files-to-index5096324354809019224.list --sourceArchiveDir=/home/REDACTED/work/xapi-java/.codeql-scratch/dbs/java/src --outputDir=/home/REDACTED/work/xapi-java/.codeql-scratch/dbs/java/trap/java (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[Enhancement]: Update copyright year and Checkstyle rule enforcement</issue_title>
<issue_description>### What

Update the project to ensure all copyright years are current (2025) across source files and configuration. Revise any Checkstyle configuration that enforces or validates copyright statements to match the latest year, and adjust all source headers accordingly.

Why

Keeping copyright information current is important for legal compliance and project professionalism. Ensuring the Checkstyle rules remain accurate helps maintain consistency and enables automated checks to catch outdated copyright statements.

Notes

This enhancement should include a review of the Checkstyle rules and automated scripts if present, plus updates to all source file headers (Java and others).</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [Enhancement]: Update copyright year and Checkstyle rule enforcement #313

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud