On Thu, 30 Jul 2026 18:23:44 GMT, Chen Liang <[email protected]> wrote:
> Introduce an instance method, `isClassOrInterface`, to `java.lang.Class` and > `java.lang.invoke.TypeDescriptor$OfField`. > > `java.lang.constant.ClassDesc` comes with an `isClassOrInterface` method. It > turns out that such a check is frequently needed in the use of `Class` > objects, usually as `isArray() || isPrimitive()` or `!isArray() && > !isPrimitive()`, with 14 occurrences in various reflective code. > > In addition, `Class` can offer a more efficient implementation than two > checks: it can perform a single bit pattern check to derive this result, > making such an API more feasible. > > --------- > - [x] I confirm that I make this contribution in accordance with the [OpenJDK > Interim AI Policy](https://openjdk.org/legal/ai). Tier 1-3 on linux-x64 passes. The direct motivation is that #32086 is going to add another check that is directly covered by this API. ------------- PR Comment: https://git.openjdk.org/jdk/pull/32109#issuecomment-5134916873
