RFR: 8354724: Methods in java.io.Reader to read all characters and all lines [v19]

[Markus KARG]

On Wed, 14 May 2025 17:56:44 GMT, Markus KARG <duke at openjdk.org> wrote:

>> As being a server developer for decades I need to say that I would love to have this not for convenience but for the performance reasons explained above, and that `int` length is perfect to speed up 99,9% of all cases. So we should not forget about `CharSequence` hastily.
>
> BTW, it will not fail with OOME, but it should throw IOE in that case.

BTW, it will *already* throw OOME as-is, *because* it returns a `String` even if the Reader is attached to an infinite source.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24728#discussion_r2089465925