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Update contributing doc for new Java 21 requirement (#113642) 

Update references in our contributing doc mention Java 17 to Java 21.

Closes https://github.com/elastic/elasticsearch/issues/113347
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Mark Vieira 2024-09-26 14:20:37 -07:00 committed by GitHub
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CONTRIBUTING.md
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@ -111,9 +111,9 @@ Contributing to the Elasticsearch codebase
**Repository:** [https://github.com/elastic/elasticsearch](https://github.com/elastic/elasticsearch)
JDK 17 is required to build Elasticsearch. You must have a JDK 17 installation
JDK 21 is required to build Elasticsearch. You must have a JDK 21 installation
with the environment variable `JAVA_HOME` referencing the path to Java home for
your JDK 17 installation.
your JDK 21 installation.
Elasticsearch uses the Gradle wrapper for its build. You can execute Gradle
using the wrapper via the `gradlew` script on Unix systems or `gradlew.bat`
@ -152,9 +152,9 @@ The definition of this Elasticsearch cluster can be found [here](build-tools-int
### Importing the project into IntelliJ IDEA
The minimum IntelliJ IDEA version required to import the Elasticsearch project is 2020.1.
Elasticsearch builds using Java 17. When importing into IntelliJ you will need
Elasticsearch builds using Java 21. When importing into IntelliJ you will need
to define an appropriate SDK. The convention is that **this SDK should be named
"17"** so that the project import will detect it automatically. For more details
"21"** so that the project import will detect it automatically. For more details
on defining an SDK in IntelliJ please refer to [their documentation](https://www.jetbrains.com/help/idea/sdk.html#define-sdk).
SDK definitions are global, so you can add the JDK from any project, or after
project import. Importing with a missing JDK will still work, IntelliJ will