RFR: 8297276: Remove thread text from Subject.current

[Xue-Lei Andrew Fan]

On Tue, 22 Nov 2022 16:26:30 GMT, Weijun Wang <weijun at openjdk.org> wrote:

> With the introduction of Virtual Threads, the current subject is no longer guaranteed to be inherited in a new thread. Remove this requirement until we find another way to implement `Subject::current`.

src/java.base/share/classes/javax/security/auth/Subject.java line 329:

> 327:      * subject is {@code null} before the first call of {@code callAs()}.
> 328:      * <p>
> 329:      * When a new thread is created, its current subject is the same as

what about change from"when" to "if", in case some implementation still create a new thread?

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PR: https://git.openjdk.org/jdk/pull/11292