Hi, I have drafted a CSR for JDK-8344943 which is now ready for an initial round of reviews:
https://bugs.openjdk.org/browse/JDK-8345054 The CSR adds the "final" modifier to 21 classes in java.base which are today "effectively not subclassable", but not marked as such. In addition to simply adding the final modifier, the CSR suggests minor updates to the classes DynamicCallSiteDesc, ModuleDescriptor and InterfaceAddress to better express them being non-subclassable. Owners of these classes are especially welcome to comment on the CSR. The specification changes may be easier to read in the draft PR: https://github.com/openjdk/jdk/pull/22389/files Thanks, Eirik
