On Fri, 18 Apr 2025 02:26:10 GMT, Shaojin Wen <s...@openjdk.org> wrote:
>> 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.
We need to provide a StringBuilder that creates a coder of UTF16 to avoid the
unnecessary UTF16 to LATIN1 conversion overhead here.
If we do not want to add a new public method, we can add an internal method and
expose it through JLA for use here.
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PR Review Comment: https://git.openjdk.org/jdk/pull/24728#discussion_r2049921890
