Upgrade to JDK 17 and Gradle 8.14.3 (targeting Java 11 bytecode)

[Copilot]

Upgrades the project to build with JDK 17 and Gradle 8.14.3 (latest), while maintaining Java 11 bytecode compatibility for the compiled artifacts.

Changes

• Gradle: 7.5.1 → 8.14.3

  • Updated wrapper properties and task configuration

• Java compatibility: Build with JDK 17, target Java 11 bytecode

  • Updated .java-version from 11 to 17 (for building with JDK 17)
  • Set sourceCompatibility and targetCompatibility to 11 across all modules (for Java 11 bytecode compatibility)
  • Removed obsolete Java 8 compatibility check in Javadoc configuration

• Android Gradle Plugin: 7.2.2 → 8.2.0

  • Added required namespace declarations to Android library modules (AGP 8.x requirement)

• GitHub Actions: Updated workflows to use .java-version file

  • Updated actions/checkout from v2 to v4
  • Updated actions/setup-java from v1 to v4 with java-version-file support
  • All workflows now dynamically read Java version from .java-version instead of hardcoded Java 11

Notes

Android modules require network access to Google Maven repository. Java modules build and test successfully with the new configuration. The compiled bytecode has been verified as Java 11 compatible (major version 55), ensuring broader runtime compatibility while leveraging JDK 17's build tools.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Upgrade Gradle, Java version</issue_title>
<issue_description>Upgrade Java to: Java 17

Upgrade to latest Gradle version 8</issue_description>

<agent_instructions>Upgrade to Java 17 and Gradle 8

Make sure gradlew check passes</agent_instructions>

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

• Fixes Upgrade Gradle, Java version #283

---

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[keesvandieren]

@copilot why did you use gradle 8.5? 8.14.3 is latest. If 8.14.3 works, please update to that version

Please update github actions also to use .java-version file (now still hardcoded to java 11)

[Copilot]

@copilot why did you use gradle 8.5? 8.14.3 is latest. If 8.14.3 works, please update to that version

Please update github actions also to use .java-version file (now still hardcoded to java 11)

Updated to Gradle 8.14.3 (latest) in commit 02b2714. Also updated all GitHub Actions workflows to use the .java-version file instead of hardcoded Java 11, and modernized the actions to use checkout@v4 and setup-java@v4 in commits 02b2714 and 2ea68f7.

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:

• dl.google.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED --add-opens=java.xml/javax.xml.namespace=ALL-UNNAMED -Xms1024m -Xmx2048m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -cp (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)

[keesvandieren]

Can you set targetCompatibility to 11, while using jdk 17 to build @copilot?

[Copilot]

Can you set targetCompatibility to 11, while using jdk 17 to build @copilot?

Changed targetCompatibility to 11 (along with sourceCompatibility to 11) in commit 5e1199f. The project now builds with JDK 17 (from .java-version) but produces Java 11-compatible bytecode (verified as major version 55).

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:

• dl.google.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED --add-opens=java.xml/javax.xml.namespace=ALL-UNNAMED -Xms1024m -Xmx2048m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -cp (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)