Java iso 8601

Active Oldest Votes. Where to obtain the java. Java 9 adds some minor features and fixes. Android Later versions of Android bundle implementations of the java. Basil Bourque Basil Bourque k 78 78 gold badges silver badges bronze badges. Works most of the time, but not always. The Problem is described here yes, it is.

Net-Code, but same Problem. See Basil Bourque answere for correct solution. DoctorBug DoctorBug 5 5 silver badges 8 8 bronze badges. In fact setMinimalDaysInFirstWeek 4 at least half a week at year beginning , is default for the standard, and not needed in java - I think.

YEAR use calendar. JoopEggen That may be true sometimes, but not always, because GregorianCalendar is locale-sensitive. So depending on the selected locale or default locale the value for minimal days in first week and also first day of week can vary. The Javadoc of GregorianCalendar provides some information about this. How do you get the date in your example? The timezone is not known if there is only year, month and day.

Good answer for those people who have access to neither the java. But otherwise, the old date-time classes such as java. Calendar that were bundled with the earliest versions of Java should be avoided. The old classes are notoriously troublesome. The Joda-Time classes mentioned by skaffman do handle this correctly: import java.

Calendar; import java. TimeZone; import org. Mike Gleason Mike Gleason 3, 1 1 gold badge 12 12 silver badges 7 7 bronze badges. YEAR use cal. JodaStephen Jose Luu Jose Luu. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Learn more. How to format an ISO string in Java? Asked 1 year, 11 months ago. Active 1 year, 11 months ago. Viewed 2k times. Ole V. Those classes are poorly designed and long outdated, the former in particular notoriously troublesome. No need for any explicit formatter for parsing. Do you want the time converted to a well-defined time zone before formatting it? My code line in the previous comment does not do that. Add a comment. Active Oldest Votes. Sriram Sriram 6 6 silver badges 10 10 bronze badges.

You should use uuuu for the year. See here. Or a more thorough treatment here: uuuu versus yyyy in DateTimeFormatter formatting pattern codes in Java?

Thank you so much Palani! This worked like a charm : — selbay No need to define that formatting pattern. Already defined in the constant DateTimeFormatter. Big difference. However, as a developer, we cannot avoid this topic — manipulating date objects is essential in our daily mission. Date and time expressed according to ISO is:. Date to ISO date string. For other cases, I believe using java. Calendar , java. GregorianCalendar would be a better solution.

You can see the difference in the following paragraphs. When using Calendar , we need to get an instance, then build a date object with it.