Upgrade Java version from 17 to 21 LTS #12
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- Update java.version property from 17 to 21 in pom.xml - Fix Maven compiler plugin configuration from Java 1.8 to 21 - Update Docker builder image from maven:3.8.3-openjdk-17 to openjdk-21 - Update Docker runtime image from openjdk:17-alpine to openjdk:21-alpine - Update Jenkins installation docs from openjdk-17-jre to openjdk-21-jre Spring Boot 3.3.3 and MySQL connector 8.0.33 are compatible with Java 21. Co-Authored-By: jia.wu@codeium.com <jia_wu@hotmail.ca>
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- Upgrade maven-compiler-plugin from 3.8.0 to 3.11.0 - Version 3.11.0 is required to support Java 21 compilation Co-Authored-By: jia.wu@codeium.com <jia_wu@hotmail.ca>
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Upgrade Java version from 17 to 21 LTS
Summary
This PR upgrades the Spring Boot banking application from Java 17 to Java 21 LTS across all components:
java.versionproperty from 17 to 21 and fixed Maven compiler plugin configuration (was incorrectly set to Java 1.8, now properly set to 21). Also upgraded maven-compiler-plugin from 3.8.0 to 3.11.0 for Java 21 support.maven:3.8.3-openjdk-21) and runtime image (openjdk:21-alpine)openjdk-21-jreThe changes maintain compatibility with Spring Boot 3.3.3 (which supports Java 21) and MySQL connector 8.0.33.
Review & Testing Checklist for Human
mvn clean compileto ensure no compilation errorsdocker build .to verify both openjdk-21 images are available and build succeedsopenjdk-21-jrepackage is available for Jenkins installationNotes
mysql:mysql-connector-java→com.mysql:mysql-connector-j, but this is just packaging and doesn't affect Java 21 compatibilityLink to Devin run: https://app.devin.ai/sessions/dc04192d9ad643d0b1b6b44345264507
Requested by: @JRWu