Execute modernization plan: Upgrade to Java 21 and Spring Boot 3.4 LTS

[Copilot]

Executes the automated modernization plan from .github/modernize/upgrade-to-lts-20260212103030 using OpenRewrite recipes to upgrade the PhotoAlbum application to latest LTS versions.

Upgrades

• Java: 1.8 → 21
• Spring Boot: 2.7.18 → 3.4.2
• Spring Framework: 5.3.x → 6.x (transitive)
• Namespace: javax.* → jakarta.*

Changes

Dependencies (pom.xml)

• Updated java.version, maven.compiler.source/target to 21
• Updated spring-boot-starter-parent to 3.4.2
• Oracle JDBC driver: 21.5.0.0 → 23.5.0.24.07
• H2 Database: 2.1.214 → 2.3.232

Code Modernization

• Photo.java: Migrated persistence/validation imports to jakarta namespace
• Controllers: Updated to Optional.isEmpty() and simplified annotations
• PhotoServiceImpl: Applied Java 21 idioms (.formatted(), .getFirst())

Documentation

• Generated task summary: .github/modernization/001-upgrade-java-spring-boot/modernization-summary.md
• Updated tasks.json with execution status and success criteria results

Build & Test Status

• ✅ Build: SUCCESS (requires Java 21)
• ✅ Tests: 1/1 passing
• ⚠️ Security: CVE-2024-47554 in commons-io:2.11.0 (HIGH) - recommend upgrading to 2.18.0

Migration Strategy

Applied OpenRewrite recipes in two milestones:

1. Upgrade to Java 21 + Spring Boot 3.3.x (automated transformation)
2. Update to Spring Boot 3.4.2 (dependency bump)

Total changes: 6 files, 16 insertions(+), 16 deletions(-)

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:

• repository.apache.org
  • Triggering command: /usr/lib/jvm/temurin-8-jdk-amd64/bin/java /usr/lib/jvm/temurin-8-jdk-amd64/bin/java -classpath /usr/share/apache-maven-3.9.12/boot/plexus-classworlds-2.9.0.jar -Dclassworlds.conf=/usr/share/apache-maven-3.9.12/bin/m2.conf -Dmaven.home=/usr/share/apache-maven-3.9.12 -Dlibrary.jansi.path=/usr/share/apache-maven-3.9.12/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/PhotoAlbum-Java/PhotoAlbum-Java org.codehaus.plexus.classworlds.launcher.Launcher --quiet rewrite:run (dns block)
• repository.jboss.org
  • Triggering command: /usr/lib/jvm/temurin-8-jdk-amd64/bin/java /usr/lib/jvm/temurin-8-jdk-amd64/bin/java -classpath /usr/share/apache-maven-3.9.12/boot/plexus-classworlds-2.9.0.jar -Dclassworlds.conf=/usr/share/apache-maven-3.9.12/bin/m2.conf -Dmaven.home=/usr/share/apache-maven-3.9.12 -Dlibrary.jansi.path=/usr/share/apache-maven-3.9.12/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/PhotoAlbum-Java/PhotoAlbum-Java org.codehaus.plexus.classworlds.launcher.Launcher --quiet rewrite:run (dns block)
• repository.ow2.org
  • Triggering command: /usr/lib/jvm/temurin-8-jdk-amd64/bin/java /usr/lib/jvm/temurin-8-jdk-amd64/bin/java -classpath /usr/share/apache-maven-3.9.12/boot/plexus-classworlds-2.9.0.jar -Dclassworlds.conf=/usr/share/apache-maven-3.9.12/bin/m2.conf -Dmaven.home=/usr/share/apache-maven-3.9.12 -Dlibrary.jansi.path=/usr/share/apache-maven-3.9.12/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/PhotoAlbum-Java/PhotoAlbum-Java org.codehaus.plexus.classworlds.launcher.Launcher --quiet rewrite:run (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

Call skill execute-modernization-plan to Execute modernization plan

Using the below context

• modernization-description: execute the upgrade plan
• modernization-work-folder: .github\modernize\upgrade-to-lts-20260212103030

This pull request contains changes made by the Modernization Cloud Coding Agent.

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