Collector / Collectors

Brian Goetz brian.goetz at oracle.com
Thu Jun 20 09:45:00 PDT 2013


Several people have suggested adding:

   Collector.of(supplier, accumulator, combiner)
   Collector.of(supplier, accumulator, combiner, finisher)

which is sensible and easy.

On 6/18/2013 11:58 AM, Brian Goetz wrote:
> I think I may (finally!) have a final API candidate for Collector /
> Collectors.  Updated docs here:
>
>    http://cr.openjdk.java.net/~briangoetz/doctmp/doc/
>
> Salient recent changes:
>   - Incorporation of finishing function into Collector
>   - Renamings in Collector API
>   - Morph toStringBuilder, toStringJoiner into joining()
>   - Add prefix/suffix version of joining()
>   - Addition of summingBy{Int,Long,Double}
>   - Addition of averagingBy{Int,Long,Double}
>   - Rename toXxxSummaryStatistics to summarizingXxx
>   - no-see reducing, and minBy/maxBy collectors return Optional
>   - elimination of canned merger functions from API
>
> Please review the API and spec.  I have set up a SurveyMonkey with the
> usual password to collect review comments at:
>
>    https://www.surveymonkey.com/s/3TTBJ7K
>
>


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