I’ll try this again. There is some discussion in the issue. The latest discussion seems to be: mkarg said: While that is absolutely correct, the technical answer is a bit more complex: What is the final predicate that makes a data type eligible for inclusion in the set of mandatory type mappings? One could say, … Read more
Both are fine. And neither is recommended except for a minority of purposes. What do you need milliseconds since the epoch for? In Java, we can have many different ways to get the current timestamp, For current timestamp just use Instant.now(). No need to convert to milliseconds. Many methods from the first years of Java, … Read more
To calculate days, hours and/or minutes between two Instant objects: Instant instant1 = Instant.parse(“2019-02-14T18:42:00Z”); Instant instant2 = Instant.parse(“2019-04-21T05:25:00Z”); // If you only need one of them System.out.println(ChronoUnit.DAYS.between(instant1, instant2)); // prints: 65 System.out.println(ChronoUnit.HOURS.between(instant1, instant2)); // prints: 1570 System.out.println(ChronoUnit.MINUTES.between(instant1, instant2)); // prints: 94243 // Or use alternate syntax (it’s the same thing) System.out.println(instant1.until(instant2, ChronoUnit.DAYS)); // prints: 65 … Read more
I changed my computer’s time zone to Europe/Bucharest for an experiment. This is UTC + 2 hours like your time zone. Now when I copy your code I get a result similar to yours: Instant now = Instant.now(); System.out.println(now); // prints 2017-03-14T06:16:32.621Z Timestamp current = Timestamp.from(now); System.out.println(current); // 2017-03-14 08:16:32.621 Output is given in comments. … Read more
tl;dr Fix your formatting pattern for unpadded month and day. Use only java.time classes, never the legacy classes. Contrived example: LocalDateTime.parse( // Parse as an indeterminate `LocalDate`, devoid of time zone or offset-from-UTC. NOT a moment, NOT a point on the timeline. “04:30 PM, Sat 5/12/2018” , // This input uses a poor choice of … Read more
Java 9+ LocalDate.ofInstant(…) arrived in Java 9. Instant instant = Instant.parse(“2020-01-23T00:00:00Z”); ZoneId zone = ZoneId.of(“America/Edmonton”); LocalDate date = LocalDate.ofInstant(instant, zone); See code run live at IdeOne.com. Notice the date is 22nd rather than 23rd as that time zone uses an offset several hours before UTC. 2020-01-22 Java 8 If you are using Java 8, then … Read more
Here is how you can get ZoneOffset from ZoneId: Instant instant = Instant.now(); //can be LocalDateTime ZoneId systemZone = ZoneId.systemDefault(); // my timezone ZoneOffset currentOffsetForMyZone = systemZone.getRules().getOffset(instant); NB: ZoneId can have different offset depending on point in time and the history of the particular place. So choosing different Instants would result in different offsets. NB2: … Read more