RFR: 8355444: [java.io] Use @requires tag instead of exiting based on "os.name" property value [v2]

[Brian Burkhalter]

On Mon, 28 Apr 2025 16:23:16 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

> then maybe consider adding jtreg's `@comment` in the test

Added in fb9f0c5.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24860#discussion_r2064072161