Java Cup
Inside Java

News and views from members of the Java team at Oracle

Episode 55 “You Must Avoid Final Field Mutation” [IJN]

Posted on April 16, 2026

With JDK 26 / JEP 500 starting to prevent final field mutation through reflection, it is important that Java projects stop employing that practice. Whether it is for dependency injection, serialization, cloning, or general hackery, alternatives need to be explored.

Show Notes

Additional Resources

The "Inside Java Newscast" is a monthly YouTube show that we also publish as a podcast. For Inside Java Podcast episodes, check out the podcast page or our YouTube playlist. For more Java news, subscribe to our RSS feed and follow @Java on X.

Contact us.