java-time

I tried to calculate the difference between two dates and I noticed one thing. When calculating only the days, the start of daylight saving time is included in the interval, so the result will be shorter with 1 day. To obtain accurate results, the value of hours also must be considered. For example: SimpleDateFormat format = new SimpleDateFormat("MM-dd-yyyy"); Date dfrom = format.parse("03-29-2015"); Date dto = format.parse("03-30-2015"); long diff = dto.getTime() - dfrom.getTime(); System.out.println(diff); System.out.println("Days: "+diff / (24 * 60 * 60 * 1000)); System.out.println("Hours:

I am trying to use java.time.LocalDate in my android app, however if I try to import it, then any class from java.time gives a cannot resolve symbol error in Android studio 1.1 The only reason I could figure out for this is that it doesn't support java 8. Is that really the case? Android API level 26 Android API level 26 gained an implementation of java.time including your LocalDate class. Earlier Android For Android <26, alternatives include: ThreeTen-Backport is a back-port of much of the java.time functionality to Java 6 & 7. ThreeTenABP adapts ThreeTen-Backport to Android. Joda-Time is

Is there anyway to get a java.time (new in Java 8) compatible time class out of a ResultSet ? I am aware you can use ResultSet 's getDate or getTimestamp but these method return java.sql.Date / java.sql.Timestamp objects which are now deprecated so it seems like bad practice to use them in order to create a ZonedDateTime or similar. Meno Hochschild Most database vendors don't support JDBC 4.2 yet. This specification says that the new java.time -types like LocalDate will/should be supported using the existing methods setObject(...) and getObject() . No explicit conversion is required and

When retrieving a java.sql.Timestamp from a database via JDBC 4.1 or earlier, how does one obtain/convert to a java.time object? Neither of the open-source JDBC drivers for Postgres is JDBC 4.2 compliant yet, so I'm looking for a way to use use java.time with JDBC 4.1. pickypg New Methods On Old Classes By using the driver with Java 8 and later, you should automatically pick up some methods on your java.sql.Timestamp object for free. Both java.sql.Time and java.sql.Date have similar conversion methods. Namely, to convert from java.sql to java.time you are looking for: Timestamp::toInstant()

In my test case, I need test time sensitive method, in that method we're using java 8 class LocalDate, it is not Joda . What can I do to change time, when I'm running test assylias In your code, replace LocalDate.now() with LocalDate.now(clock); . You can then pass Clock.systemDefaultZone() for production and a fixed clock for testing. This is an example : First, inject the Clock . If you are using spring boot just do a : @Bean public Clock clock() { return Clock.systemDefaultZone(); } Second, call LocalDate.now(clock) in your code : @Component public class SomeClass{ @Autowired private Clock

I've read the documentation, but I still can't get when I should use one or the other: OffsetDateTime ZonedDateTime According to documentation OffsetDateTime should be used when writing date to database, but I don't get why. Q: What's the difference between java 8 ZonedDateTime and OffsetDateTime? The javadocs say this: " OffsetDateTime , ZonedDateTime and Instant all store an instant on the time-line to nanosecond precision. Instant is the simplest, simply representing the instant. OffsetDateTime adds to the instant the offset from UTC/Greenwich, which allows the local date-time to be

When I do this String datum = "20130419233512"; DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmss").withZone(ZoneId.of("Europe/Berlin")); OffsetDateTime datetime = OffsetDateTime.parse(datum, formatter); I get the following exception: java.time.format.DateTimeParseException: Text '20130419233512' could not be parsed: Unable to obtain OffsetDateTime from TemporalAccessor: {InstantSeconds=1366407312},ISO,Europe/Berlin resolved to 2013-04-19T23:35:12 of type java.time.format.Parsed How can I parse my datetime string so that it is interpreted as always being from the