Java - format Date only with slash based on locale

Question

My code is

ZonedDateTime zoned = ZonedDateTime.now();
DateTimeFormatter pattern = DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM).withLocale(Locale.forLanguageTag("ja-JP"));
System.out.println(zoned.format(pattern));

And the output is 2022/06/13, which is fine. But when I change the locale to en-US, the date is Jun 13, 2022. I want to have all locale-based date to only have numbers and slashes, like 2022/06/13, 06/13/2022. How can I do that?

I guess the stupid question is why? Formatting a date/time for the user should respect the users locale formatting, because not everybody represents the date in the same (ie 3/4/5 has different meaning to different people in different locations). If you're formatting the date for "internal" representation (ie for API calls etc), then you should really be using a ISO standard format - just saying — MadProgrammer
– MadProgrammer, Commented Jun 13, 2022 at 4:21
I suggest that your users will be happier with what you already have. If you insist, you can get a format pattern from DateTimeFormatterBuilder.getLocalizedDateTimePattern(), identify the order of y, M and d and manually replace yy with either y or yyyy. — Anonymous
– Anonymous, Commented Jun 13, 2022 at 14:06

xarcher · Accepted Answer · 2022-06-13 03:46:15Z

1

you can try:

DateTimeFormatter pattern = DateTimeFormatter
                .ofPattern("yyyy/MM/dd")
                .withLocale(Locale.forLanguageTag("ja-JP")); // or "en-US"

answered Jun 13, 2022 at 3:46

xarcher

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