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Upgrade from Java 8 to Java 11#3

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devin/1779388329-upgrade-java-11
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Upgrade from Java 8 to Java 11#3
devin-ai-integration[bot] wants to merge 1 commit into
masterfrom
devin/1779388329-upgrade-java-11

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@devin-ai-integration devin-ai-integration Bot commented May 21, 2026

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Summary

Upgrades the project from Java 8/9 to Java 11.

Changes:

  • pom.xml: Updated maven-compiler-plugin from 3.1 to 3.8.1, changed source/target from 1.9 to 11, added release flag for Java 11, and added maven.compiler.source/maven.compiler.target properties
  • README.md: Updated JDK requirement from JDK 8 to JDK 11+, replaced Oracle download link with Adoptium Temurin, updated sample java -version output

All 100 source files compile cleanly with Java 11. No removed/deprecated API usage was found (no javax.xml.bind, sun.misc, etc.).

Review & Testing Checklist for Human

  • Run mvn clean compile with JDK 11 to verify compilation
  • Spot-check a few example programs: cd target/classes && java lambdasinaction/chap1/FilteringApples

Notes

The pom.xml previously had source/target set to 1.9 (Java 9), not 1.8 as the README suggested. This PR normalizes everything to Java 11.

Link to Devin session: https://app.devin.ai/sessions/4758be018bb5443b934397e37fee2219
Requested by: @TheWuster935


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- Update maven-compiler-plugin source/target/release from 1.9 to 11
- Bump maven-compiler-plugin version from 3.1 to 3.8.1
- Add maven.compiler.source and maven.compiler.target properties
- Update README.md to reference JDK 11+ and Adoptium

Co-Authored-By: derek.wu <derekwu35@gmail.com>
@devin-ai-integration

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