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

[Copilot]

Executed modernization plan upgrade-to-lts-20260212111023 to migrate PhotoAlbum-Java to latest LTS versions.

Upgrade Tasks Completed

Task 001: Java 1.8 → 21 (LTS)

• Updated build configuration to Java 21
• Applied OpenRewrite migration recipes
• Modernized code idioms (.isEmpty(), .formatted(), .getFirst())

Task 002: Spring Boot 2.7.18 → 3.4.2

• Upgraded Spring Boot parent POM to 3.4.2 (Spring Framework 6.x)
• Migrated javax.* → jakarta.* namespace:
  • javax.persistence.* → jakarta.persistence.* (JPA annotations)
  • javax.validation.* → jakarta.validation.* (validation annotations)

Files Modified

• pom.xml - Java and Spring Boot version upgrades
• src/main/java/com/photoalbum/model/Photo.java - JPA namespace
• src/main/java/com/photoalbum/controller/HomeController.java - Validation namespace
• .github/modernize/upgrade-to-lts-20260212111023/tasks.json - Execution status tracking

Build Requirements

Requires Java 21 JDK for compilation.

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 -U org.openrewrite.maven:rewrite-maven-plugin:5.47.3:run -Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-migrate-java:2.31.1 -Drewrite.activeRecipes=com.photoalbum.UpgradeToJava21 --quiet (dns block)
  • Triggering command: /usr/lib/jvm/temurin-21-jdk-amd64/bin/java /usr/lib/jvm/temurin-21-jdk-amd64/bin/java --enable-native-access=ALL-UNNAMED -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 -U org.openrewrite.maven:rewrite-maven-plugin:5.47.3:run -Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-migrate-java:2.31.1 -Drewrite.activeRecipes=com.photoalbum.UpgradeToJava21 --quiet (dns block)
  • Triggering command: /usr/lib/jvm/temurin-21-jdk-amd64/bin/java /usr/lib/jvm/temurin-21-jdk-amd64/bin/java --enable-native-access=ALL-UNNAMED -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 -U org.openrewrite.maven:rewrite-maven-plugin:5.47.3:run -Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-migrate-java:2.31.1 -Drewrite.activeRecipes=com.photoalbum.UpgradeToJava21 --quiet (dns block)
  • Triggering command: /usr/lib/jvm/temurin-21-jdk-amd64/bin/java /usr/lib/jvm/temurin-21-jdk-amd64/bin/java --enable-native-access=ALL-UNNAMED -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-20260212111023

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

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