RFR: 8263668: Update java.time to use instanceof pattern variable [v6]

[Patrick Concannon]

On Wed, 24 Mar 2021 11:06:38 GMT, Rémi Forax <github.com+828220+forax at openjdk.org> wrote:

>> Patrick Concannon has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Updated single letter pattern variable names
>
> src/java.base/share/classes/java/time/format/DateTimeFormatterBuilder.java line 168:
> 
>> 166:     private static final TemporalQuery<ZoneId> QUERY_REGION_ONLY = (temporal) -> {
>> 167:         ZoneId zone = temporal.query(TemporalQueries.zoneId());
>> 168:         return (zone != null && (!(zone instanceof ZoneOffset)) ? zone : null);
> 
> i find this code hard to read
> `return (zone != null && (!(zone instanceof ZoneOffset))) ? zone : null;`
> seems better`

Updated in 647bd6b as suggested by Michael Kuhlmann

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PR: https://git.openjdk.java.net/jdk/pull/3170