Hey folks, I have this simple test that I run with java 9.0.1 as well as java 1.8_131
DateFormatSymbols s = new DateFormatSymbols(Locale.GERMAN); System.out.println(Arrays.toString(s.getShortWeekdays())); on Java 9 it prints this: [, So., Mo., Di., Mi., Do., Fr., Sa.] while on Java 1.8 and below it prints: [, So, Mo, Di, Mi, Do, Fr, Sa] This is also true for Month in the German local. I didn't test anything else but I wonder if this is expected or if it is considered a bug. I also raised an issue against JodaTime which relies on this here [1]. I ran into this a while ago on elasticsearch here [2] but just picked it up. I wish I had done this earlier! thanks, simon [1] https://github.com/JodaOrg/joda-time/issues/462 [2] https://github.com/elastic/elasticsearch/issues/10984