RFR: 8341566: Add Reader.of(CharSequence) [v7]

[Markus KARG]

On Thu, 10 Oct 2024 14:32:30 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> I think "release 24" is fine for now as similar text exists in `java.util.Vector`. We can normalize such texts when we implement https://bugs.openjdk.org/browse/JDK-8341736.
>
> Please remove the reference to JDK 24; it will age rapidly and would require extra maintenance later.
> The javadoc should focus on the functionality provided.

Done; replaced by Alan's proposal: "Reader.of(CharSequence) provides a method to read from any CharSequence that may be more efficient than StringReader"

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/21371#discussion_r1795763919