Roll back to Java 17

[Copilot]

Description

Rolls back project from Java 25 to Java 17 for Elastic Beanstalk deployment compatibility.

Changes

Build Configuration

• Updated java.version property to 17 in root POM
• Updated all GitHub Actions workflows to use JDK 17
• Updated devcontainer configuration to Java 17 image

Code Compatibility

• Refactored switch pattern matching to if-else in StatementHttpMessageWriter.java:

  // Before (Java 21+ pattern matching)
  final Stream<Attachment> attachments = switch (object) {
    case Statement statement -> getRealAttachments(statement);
    case List<?> statements when !statements.isEmpty() -> ...;
    default -> null;
  };
  
  // After (Java 17 compatible)
  final Stream<Attachment> attachments;
  if (object instanceof Statement statement) {
    attachments = getRealAttachments(statement);
  } else if (object instanceof List<?> statements && !statements.isEmpty()) {
    attachments = ...;
  } else {
    attachments = null;
  }

Documentation

• Updated README.md and CONTRIBUTING.md to reference Java 17
• Updated SDKMAN installation examples

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/2.23.7/x64/codeql/tools/linux64/java/bin/java /opt/hostedtoolcache/CodeQL/2.23.7/x64/codeql/tools/linux64/java/bin/java -jar /opt/hostedtoolcache/CodeQL/2.23.7/x64/codeql/xml/tools/xml-extractor.jar --fileList=/home/REDACTED/work/xapi-java/.codeql-scratch/dbs/java/working/files-to-index11448977796147658271.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

roll back to Java 17 in preparation for a release to elastic beanstalk which is configured for Java 17. Will need to create a PR which changes Pom files and readme and workflows and possibly other locations

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
86.7% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Copilot]

Pull request overview

This PR rolls back the project from Java 25 to Java 17 to support deployment on Elastic Beanstalk, which is configured for Java 17. The changes ensure compatibility while maintaining all existing functionality.

Key Changes:

• Updated Java version from 25 to 17 across all configuration files
• Refactored switch pattern matching to if-else statements for Java 17 compatibility
• Updated documentation to reflect Java 17 requirement

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pom.xml	Updated java.version property from 25 to 17
xapi-client/src/main/java/dev/learning/xapi/client/StatementHttpMessageWriter.java	Refactored switch pattern matching to Java 17 compatible if-else with instanceof checks
.github/workflows/maven_push.yml	Updated GitHub Actions to use JDK 17
.github/workflows/maven_pull_request.yml	Updated GitHub Actions to use JDK 17
.github/workflows/manual-release.yml	Updated GitHub Actions to use JDK 17
.github/workflows/copilot-setup-steps.yml	Updated GitHub Actions to use JDK 17
.github/workflows/codeql.yml	Updated CodeQL workflow to use JDK 17
.devcontainer/devcontainer.json	Updated devcontainer image and runtime configuration to Java 17
README.md	Updated Java version requirement documentation from 25 to 17
CONTRIBUTING.md	Updated prerequisites and installation instructions to reference Java 17