Hi Naoto-san,
Thank you to introduce the workarounds!
It's surprising that SimpleDateFormat have supportted Gannen :)
2019年1月30日(水) 1:22 Naoto Sato <naoto.s...@oracle.com>:
> Hi Kishida-san,
>
> Currently we don't have a plan to support Gannen in java.time for
> formatting/parsing Japanese calendar dates. Here are a couple of
> workarounds:
>
> 1. Use java.text APIs to format/parse dates, e.g.,
>
> jshell> new SimpleDateFormat("GGGGyyyy年",
> Locale.forLanguageTag("ja-JP-u-ca-japanese")).format(new
> Calendar.Builder().setDate(2019, Calendar.MAY, 1).build().getTime())
> $3 ==> "元号元年"
>
> 2. For java.time API, use
> DateTimeFormatterBuilder.appendText(TemporalField, Map<Long, String>) to
> map the 1 to "元". Following issue demonstrates how to do it:
>
> https://bugs.openjdk.java.net/browse/JDK-8042131
>
> HTH,
> Naoto
>
> On 1/29/19 4:21 AM, kishida naoki wrote:
> > As you know, Japanese government have a plan to change the era on May.
> > It will be the first year of the new era.
> > In practice, we describe the first year as "元年" not as "1年"
> >
> > Now DateTimeFormatter with `G` output the era.
> > `DateTimeFormatter.ofPattern("Gy年").format(JapaneseDate.of(2019, 5, 2))`
> > output `元号1年`
> >
> > Do you have any plan to have a option to format it as `元号元年` or already
> > implemented?
> >
>
--
きしだ なおき
