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.

Links:

JEP 500
Inside Java Newscast #101

Make sure to also check the **Duke's Corner podcast** on [dev.java](https://dev.java/duke/corner/).

Additional resources

Inside.java : News and views from members of the Java team at Oracle
Dev.java : The Destination for Java Developers
OpenJDK
Oracle Java

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