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?
