# Reflection writing to a final field on JDK 27: same behaviour as 26 (compare 70-final-field-mutation.txt) === JDK 27, defaults WARNING: Final field port in class FinalFieldMutation$Config has been mutated reflectively by class FinalFieldMutation in unnamed module @ (file:/build/lanes/ffm27/) WARNING: Use --enable-final-field-mutation=ALL-UNNAMED to avoid a warning WARNING: Mutating final fields will be blocked in a future release unless final field mutation is enabled field reads : 9090 port() returns : 8080 === JDK 27, --illegal-final-field-mutation=deny setInt refused : class FinalFieldMutation (in unnamed module @) cannot set final field FinalFieldMutation$Config.port (in unnamed module @), unnamed module @ is not allowed to mutate final fields