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Inside Java

News and views from members of the Java team at Oracle

You Must Avoid Final Field Mutation - Inside Java Newscast #110

Also available as Inside Java Podcast #55:

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 - check out the YouTube playlist for all the episodes. Since 2026, we also publish it as a podcast. For more Java news, subscribe to our RSS feed and follow @Java on X.

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