Episode 68 “Operator Overloading with Type Classes” [AtA]

OpenJDK's Project Valhalla is improving Java's support for custom numerical types. That goes beyond value types and also encompasses explorations into operator support. While Java is extremely unlikely to ever allow arbitrary operator definitions, it may well support limited operator overloading, so custom value types could be added or multiplied with plus or multiplication signs instead of annoying method calls.

In this "Ask the Architects" episode of the Inside Java Podcast, recorded during JavaOne 2026, Nicolai Parlog talks to Joe Darcy, Valhalla committer in the Java Platform Group at Oracle.

Show Notes

• JDK 28 EA (with value types)

• Joe's talk at JavaOne 2026

• Joe's talk about strictfp at JVMLS

• JEP 306: Restore Always-Strict Floating-Point Semantics

Additional Resources

• dev.java: the destination for Java developers

• OpenJDK: the place to collaborate on the Java Platform and related projects

• Oracle Java: the #1 programming language and development platform

In our show "Ask the Architects", we talk to experts in OpenJDK about their work on the Java language, API, and runtime. 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.

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