RFR: 8366517: `DateFormatSymbols(Locale)` throws NPE if `Locale` argument is null [v2]

[Naoto Sato]

On Wed, 3 Sep 2025 00:57:39 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Use Objects.requireNonNull()
>
> src/java.base/share/classes/java/text/DateFormatSymbols.java line 148:
> 
>> 146:      *             if the resources for the specified locale cannot be
>> 147:      *             found or cannot be loaded.
>> 148:      * @throws     NullPointerException if {@code locale} is null
> 
> Adding an explicit Objects.requireNull(locale, "locale") would clearly identify when the NPE is thrown.
> Though it might be earlier than without the check.

Right. Added the explicit null check. (and a test case)

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PR Review Comment: https://git.openjdk.org/jdk/pull/27060#discussion_r2319328408