RFR: Classfile signature bang support [v2]

[Chen Liang]

On Wed, 21 Jan 2026 16:03:19 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> src/java.base/share/classes/java/lang/classfile/Signature.java line 295:
>> 
>>> 293: 
>>> 294:         /**
>>> 295:          * {@return a class or interface signature without an outer type}
>> 
>> Maybe we should say that, by default, the returned signature is NOT null marked?
>
> Same for other sig factories (like ArrayType, Typevar)

Done for all ref type sig factories.

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1933#discussion_r2714207881