JEP proposed to target JDK 25: 507: Primitive Types in Patterns, instanceof, and switch (Third Preview)

Mark Reinhold mark.reinhold at oracle.com
Thu May 22 15:42:38 UTC 2025


2025/5/15 10:56:57 -0400, mark.reinhold at oracle.com:
> The following JEP is proposed to target JDK 25:
> 
>   507: Primitive Types in Patterns, instanceof, and switch (Third Preview)
>        https://openjdk.org/jeps/507
> 
>   Summary: Enhance pattern matching by allowing primitive types in all
>   pattern contexts, and extend instanceof and switch to work with all
>   primitive types.  This is a preview language feature.
> 
> Feedback on this proposal from JDK Project Committers and Reviewers [1]
> is more than welcome, as are reasoned objections.  If no such objections
> are raised by 15:00 UTC on Thursday, 22 May, or if they’re raised and
> then satisfactorily answered, then per the JEP 2.0 process proposal [2]
> I’ll target this JEP to JDK 25.

Hearing no objection, I’ve targeted this JEP to JDK 25.

- Mark


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