On Wed, 17 Dec 2025 12:11:14 GMT, Johannes Döbler <[email protected]> wrote:

>> Shaojin Wen has updated the pull request incrementally with one additional 
>> commit since the last revision:
>> 
>>   remove redundant checkField
>
> src/java.base/share/classes/java/time/format/DateTimeFormatter.java line 551:
> 
>> 549:      * This is used to optimize the storage of parsed field values in 
>> the Parsed class.
>> 550:      */
>> 551:     final boolean onlyChronoField;
> 
> If you add to DateTimePrinterParser the method:
> 
> public default boolean onlyChronoFields() {
>     return true;
> } 
> 
> and override in CompositePrinterParser, NumberPrinterParser, 
> TextPrinterParser, DefaultValueParser with obvious implementations you should 
> be able to get rid of this field, same in DateTimeFormatterBuilder. (Or keep 
> the field, but initialize in the constructor from printerParser).

https://github.com/openjdk/jdk/pull/28471/changes/d8742d7514abfe0e36f105fa7310fdb1755ae546

The initial version was similar to what you suggested. In the discussion above, 
I accepted liach's suggestion and modified it into the current implementation. 
I prefer the current implementation, and it will be easier to calculate 
chronoFieldsBitSet in the next step.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/28471#discussion_r2633384391

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