RFR: 8354724: BufferedReader readAllLines and readString methods [v5]

[Shaojin Wen]

On Thu, 17 Apr 2025 23:07:35 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Implement the requested methods and add a test thereof.
>
> Brian Burkhalter has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - 8354724: Increment copyright year in Reader
>  - 8354724: Move readString from BufferedReader to Reader

src/java.base/share/classes/java/io/Reader.java line 424:

> 422:         int n;
> 423:         while ((n = read(str)) != -1) {
> 424:             result.append(str, 0, n);

If the characters in the Reader are always Latin1, this process will convert the UTF16 char[] to the LATIN1 encoded byte[] value in the StringBuilder every time, which will cause unnecessary performance overhead.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24728#discussion_r2049918157