GeoServer is presently compiled with Java 11 LTS, with the result tested on Java 11 LTS, Java 17 LTS, and soon Java 21 LTS.

With the change to Java 17 we expect a number of libraries we use to require updating or replacing.

GeoServer is presently building on Java 17, however documentation will need to be updated when Java 11 support is dropped. Organizations may wish to pursue permission to operate Java 17 LTS ahead of this planned change.

The spring-framework 6 and Jakarta Enterprise Edition application servers require Java 17 as a minimum.

In planning