RFR: 8306036: Use @apiNote in String.toLowerCase, String.toUpperCase [v2]

[Eirik Bjorsnos]

On Sat, 15 Apr 2023 19:09:34 GMT, Alan Bateman <alanb at openjdk.org> wrote:

> There may be a few like this around the JDK that pre-date the apiNote tag.

There are 44 matches in 12 files in `src/java.base/share/classes/java`, including classes such as `HttpURLConnection`, `Character`, `SimpleDateFormat`, `Locale` and `ResourceBundle`.

Would you prefer that I expand this PR to take care of at least a few of those? Happy to do so, but it will require more reviewer cycles. (Although changes should be fairly straightforward).

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PR Comment: https://git.openjdk.org/jdk/pull/13487#issuecomment-1509944762