<i18n dev>  RFR 8180469: Wrong short form text for supplemental Japanese era
naoto.sato at oracle.com
Fri Sep 1 17:48:32 UTC 2017
Yes, I remember we discussed on this issue before. The reason that LONG
and SHORT names for Japanese era are the same is that CLDR's era names
are not very consistent on length. They have "eraNames", "eraAbbr", and
"eraNarrow" variations. We simply assign LONG to eraNames and SHORT to
eraAbbr in SimpleDateFormat. Possibly the right solution is to provide
"narrow" option in SimpleDateFormat, but it would be breaking the
compatibility (text length of those pattern characters just have two
options, one is 4 or greater (=LONG), and the other is less than 4
So, considering these, I have a couple of options. One is to use the
newer java.time.format APIs which can correctly handle this, or use the
JDK8 locale data by specifying -Djava.locale.providers=COMPAT at runtime.
On 8/31/17 7:34 PM, Mitsuru Matsushima wrote:
> Hi Naoto-san,
> The fix looks good, though I'm not a reviewer...
> By the way, I may have forgotten to inform you that there exist an issue at the short form of SimpleDateFormat has an issue.
> The SimpleDateFormat class is only capable to treat two form, Short and Long.
> At JDK9, the CLDR Provider become to default, the provider returns the same value for the Short form and the Long form.
> So, the behavior of SimpleDateFormat is incompatible to previous versions.
> (See the Comparison table, I described before.)
>> -----Original Message-----
>> From: i18n-dev [mailto:i18n-dev-bounces at openjdk.java.net] On Behalf Of Naoto Sato
>> Sent: Thursday, August 31, 2017 7:56 AM
>> To: core-libs-dev <core-libs-dev at openjdk.java.net>; i18n-dev <i18n-dev at openjdk.java.net>
>> Subject: <i18n dev>  RFR 8180469: Wrong short form text for supplemental Japanese era
>> Please review the fix to the following issue:
>> The proposed changeset is located at:
>> The problem was caused by the difference of the Era display name for "SHORT" style between java.time and java.util.Calendar.
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