RFR: 8367142: Simplify java mirror handling in JNI methods [v2]

[Stefan Karlsson]

On Tue, 9 Sep 2025 06:29:51 GMT, Ioi Lam <iklam at openjdk.org> wrote:

> There are 54 cases where we call as_Klass(JNIHandles::resolve_non_null(x)), so I think it would be nice to have a way to write less code.

I think you should deal with that by adding a helper function inside jni.cpp instead of extending the *Klass functions to take a jobject.

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PR Comment: https://git.openjdk.org/jdk/pull/27158#issuecomment-3274150749