Upgrade from Java 17 to Java 21 #86
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- Update java.version property from 17 to 21 in pom.xml - Update maven-compiler-plugin source/target from 1.8 to 21 - Update Dockerfile build stage from maven:3.8.3-openjdk-17 to maven:3.9.6-openjdk-21 - Update Dockerfile runtime stage from openjdk:17-alpine to openjdk:21-alpine - Update README.md Jenkins installation from openjdk-17-jre to openjdk-21-jre - Update README-K8S.md Jenkins installation from openjdk-17-jre to openjdk-21-jre Co-Authored-By: Priya Padmanabhan <priya.padmanabhan@cognition.ai>
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Summary
This PR upgrades the Spring Boot BankApp from Java 17 to Java 21 by updating configuration across Maven, Docker, and documentation files.
Changes:
java.versionproperty from 17 to 21, and maven-compiler-plugin source/target from 1.8 to 21maven:3.8.3-openjdk-17tomaven:3.9.6-openjdk-21and runtime image fromopenjdk:17-alpinetoopenjdk:21-alpineopenjdk-17-jretoopenjdk-21-jreReview & Testing Checklist for Human
openjdk:21-alpineimage may not exist on Docker Hub (official OpenJDK images stopped at 17 for alpine). Consider usingeclipse-temurin:21-alpineoramazoncorretto:21-alpineinstead.docker build .to verify the Dockerfile builds successfully with the new base imagesmvn clean installlocally with Java 21 to ensure the application compiles correctlyRecommended test plan:
Notes