On Fri, 19 Jul 2024 21:34:36 GMT, Shaojin Wen <d...@openjdk.org> wrote:
>> Currently simpleConcat is implemented using mix and prepend, but in this
>> simple scenario, it can be implemented in a simpler way and can improve
>> performance.
>
> Shaojin Wen has updated the pull request incrementally with one additional
> commit since the last revision:
>
> handle null argument
src/java.base/share/classes/java/lang/String.java line 2990:
> 2988: return this;
> 2989: }
> 2990: return StringConcatHelper.doConcat(this, str == null ? "null" :
> str);
Suggestion:
if (isEmpty()) {
return str;
}
return StringConcatHelper.doConcat(this, str);
`str.isEmpty()` already does the null check.
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PR Review Comment: https://git.openjdk.org/jdk/pull/20253#discussion_r1685008791
