Hello, I maintain API changes analysis report for the OpenJDK project on this page: http://abi-laboratory.pro/java/tracker/timeline/openjdk/
The report is updated every other working day. Please let me know if there are any false positives in the report or if there are any private parts of the API that should not be checked for backward compatibility. The source code of the project is available at https://github.com/lvc Thanks for your feedback.