java-time

I recently moved to Java 8 to, hopefully, deal with local and zoned times more easily. However, I'm facing an, in my opinion, simple problem when parsing a simple date. public static ZonedDateTime convertirAFecha(String fecha) throws Exception { DateTimeFormatter formatter = DateTimeFormatter.ofPattern( ConstantesFechas.FORMATO_DIA).withZone( obtenerZonaHorariaServidor()); ZonedDateTime resultado = ZonedDateTime.parse(fecha, formatter); return resultado; } In my case: fecha is '15/06/2014' ConstantesFechas.FORMATO_DIA is 'dd/MM/yyyy' obtenerZonaHorariaServidor returns ZoneId.systemDefault() So

Joda Time has a nice DateTimeUtils.setCurrentMillisFixed() to mock time. It's very practical in tests. Is there an equivalent in Java 8's java.time API ? The closest thing is the Clock object. You can create a Clock object using any time you want (or from the System current time). All date.time objects have overloaded now methods that take a clock object instead for the current time. So you can use dependency injection to inject a Clock with a specific time: public class MyBean { private Clock clock; // dependency inject ... public void process(LocalDate eventDate) { if (eventDate.isBefore

Java 8's DateTimeFormatter class has a method, ofPattern(String pattern) , that lets you define a format from a string of A-z , a-z letters. The examples don't clarify the difference between y , year-of-era and Y , week-based-year . What is it? Symbol Meaning Presentation Examples ------ ------- ------------ ------- y year-of-era year 2004; 04 Y week-based-year year 1996; 96 That's year value for "year-week" style dates, as in 2006W52. It may be off the year-of-era value by +1 or -1 if the week in question straddles year boundary. See http://en.wikipedia.org/wiki/ISO_8601#Week_dates Each field

I am transitioning a project from Joda-Time to java8's native time libraries, and I have run into a snag. I have been unable to find a formatter for Duration. I would like to have a custom String format of, for instance, HHH+MM , where a Duration of 75 hours and 15 minutes would format as "75+15" . This was easy to do with Joda-Time by converting to period, and using a PeriodFormatter, but I have been unable to find this type of class in Java8. Am I missing something? There is no period/duration-formatter in jsr-310, different from JodaTime. Not every feature of JodaTime was ported to JSR-310

Of the Duration class in the new JSR 310 date API ( java.time package ) available in Java 8 and later, the javadoc says : This class models a quantity or amount of time in terms of seconds and nanoseconds. It can be accessed using other duration-based units, such as minutes and hours .In addition, the DAYS unit can be used and is treated as exactly equal to 24 hours, thus ignoring daylight savings effects. So, why does the following code crash ? Duration duration = Duration.ofSeconds(3000); System.out.println(duration.get(ChronoUnit.MINUTES)); This raises an UnsupportedTemporalTypeException :