Upgrade to Java 21 and Spring Boot 3.4.1 LTS

[Copilot]

Executed modernization plan 002-upgrade-to-lts to bring the application to latest LTS versions.

Upgrades

• Java: 1.8 → 21
  • Compiler source/target updated in pom.xml
  • Code modernized to Java 21 idioms via OpenRewrite
• Spring Boot: 2.7.18 → 3.4.1
  • Spring Framework: 5.x → 6.x
  • Jakarta EE migration: javax.* → jakarta.* namespace

Code Changes

Java 21 Modernization

// Before
if (!photoOpt.isPresent()) { ... }
String msg = String.format("Found %d photos", count);
Photo first = photos.get(0);

// After
if (photoOpt.isEmpty()) { ... }
String msg = "Found %d photos".formatted(count);
Photo first = photos.getFirst();

Jakarta EE Migration

// Before
import javax.persistence.*;
import javax.validation.constraints.*;

// After
import jakarta.persistence.*;
import jakarta.validation.constraints.*;

Dependencies

• Oracle JDBC: 21.5.0.0 → 23.5.0.24.07
• H2: 2.1.214 → 2.3.232
• commons-io: 2.11.0 → 2.18.0 (fixes CVE-2024-47554)

Files Modified

• pom.xml - Version bumps and dependency updates
• Photo.java - Jakarta namespace migration
• *Controller.java - Jakarta imports and Spring Boot 3 parameter binding
• PhotoServiceImpl.java - Java 21 API usage
• application-test.properties - H2 2.x compatibility

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 --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 va/PhotoAlbum-J (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 --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 va/PhotoAlbum-J (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 --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 va/PhotoAlbum-J (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\002-upgrade-to-lts

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

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