Java 8 examples to show you how to convert from Instant to LocalDateTime

1. Instant -> LocalDateTime

The java.time.LocalDateTime has no concept of time zone, just provide a zero offset UTC+0.

package com.mkyong.date;

import java.time.Instant; import java.time.LocalDateTime; import java.time.ZoneOffset; public class InstantExample1 { public static void main(String[] argv) { // Parse a ISO 8601 Date directly //Instant instant = Instant.parse("2016-08-18T06:17:10.225Z"); Instant instant = Instant.now(); System.out.println("Instant : " + instant); //Convert instant to LocalDateTime, no timezone, add a zero offset / UTC+0 LocalDateTime ldt = LocalDateTime.ofInstant(instant, ZoneOffset.UTC); System.out.println("LocalDateTime : " + ldt); } } 
 

Output

Instant : 2016-08-18T06:17:10.225Z
LocalDateTime : 2016-08-18T06:17:10.225

2. LocalDateTime -> Instant

package com.mkyong.date;

import java.time.*; public class InstantExample2 { public static void main(String[] argv) { // Hard code a date time LocalDateTime dateTime = LocalDateTime.of(2016, Month.AUGUST, 18, 6, 17, 10); System.out.println("LocalDateTime : " + dateTime); // Convert LocalDateTime to Instant, UTC+0 Instant instant = dateTime.toInstant(ZoneOffset.UTC); System.out.println("Instant : " + instant); } } 
 

Instant : 2016-08-18T06:17:10.225Z
LocalDateTime : 2016-08-18T06:17:10.225

http://www.mkyong.com/java8/java-convert-instant-to-localdatetime/
http://www.mkyong.com/tutorials/java-date-time-tutorials/