Tag: utc

java8 February 10, 2020 by mkyong 1 comment

Java 8 – Convert Epoch time milliseconds to LocalDate or LocalDateTime

In Java 8, we can use Instant.ofEpochMilli().atZone() to convert the epoch time in milliseconds back to LocalDate or LocalDateTime Epoch time to LocalDate LocalDate ld = Instant.ofEpochMilli(epoch).atZone(ZoneId.systemDefault()).toLocalDate(); Epoch time to LocalDateTime LocalDateTime ldt = Instant.ofEpochMilli(epoch).atZone(ZoneId.systemDefault()).toLocalDateTime(); P.S Epoch time is the number of seconds that have elapsed since 0:00:00 UTC on 1 January 1970 1. Epoch […]

java8 August 23, 2016 by mkyong 2 comments

Java 8 – ZonedDateTime examples

Few Java 8 java.time.ZonedDateTime examples to show you how to convert a time zone between different countries. Table of contents 1. Convert LocalDateTime to ZonedDateTime 2. Malaysia (UTC+08:00) -> Japan (UTC+09:00) 3. France, Paris (UTC+02:00, DST) -> (UTC-05:00) 4. References 1. Convert LocalDateTime to ZonedDateTime The LocalDateTime has no time zone; to convert the LocalDateTime […]

java8 August 20, 2016 by mkyong 1 comment

Java 8 – Convert Instant to ZonedDateTime

Java 8 examples to show you how to convert from Instant to ZonedDateTime 1. Instant -> ZonedDateTime Example to convert a Instant UTC+0 to a Japan ZonedDateTime UTC+9 InstantZonedDateTime1.java package com.mkyong.date; import java.time.Instant; import java.time.ZoneId; import java.time.ZonedDateTime; public class InstantZonedDateTime1 { public static void main(String[] argv) { // Z = UTC+0 Instant instant = Instant.now(); […]

java8 August 18, 2016 by mkyong 10 comments

Java – Display all ZoneId and its UTC offset

A Java 8 example to display all the ZoneId and its OffSet hours and minutes. P.S Tested with Java 8 and 12 1. Display ZoneId and Offset DisplayZoneAndOffSet.java package com.mkyong; import java.time.LocalDateTime; import java.time.ZoneId; import java.time.ZoneOffset; import java.time.ZonedDateTime; import java.util.HashMap; import java.util.LinkedHashMap; import java.util.Map; public class DisplayZoneAndOffSet { public static final boolean SORT_BY_REGION = false; […]