RFR: 8302590: Add String.indexOf(int ch, int fromIndex, int toIndex) [v2]

[Raffaello Giulietti]

On Fri, 24 Feb 2023 15:38:22 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> I was reluctant to add it, as it is not yet known when the PR will be integrated. I'll add it in the next commit.
>
> When the CSR is approved is a good trigger for adding @since.  But its fine to be optimistic in the PR.

addressed

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PR: https://git.openjdk.org/jdk/pull/12600