RFR: 8364007: Add overload without arguments to codePointCount in String etc.

[Tatsunori Uchino]

On Thu, 24 Jul 2025 15:10:37 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> The recommended process for proposing new APIs is to put the proposal to the OpenJDK core-libs-dev mail alias.

I glanced over https://mail.openjdk.org/pipermail/core-libs-dev/2025-July/thread.html and those for some past months, but I did not get how to send one.

According to https://mail.openjdk.org/pipermail/core-libs-dev/2025-July/149338.html and sub messages, the content in this PR seems to be transferred to the mailing list.

> Also, do we need codePointCount on CharSequence?

I did not add it because it does not have an existing overload and has a simple (but not efficient) workaround (`codePoints().count()`), but it would be nice if it exists.

> Could you please add a bug number under @bug?

Which doc comments shall I add it?

> And yes, every change to the spec needs a CSR.

I got it, but do you know how non-Authors like me create ones?

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PR Comment: https://git.openjdk.org/jdk/pull/26461#issuecomment-3121518177