Java tutorial
import java.time.Duration; import java.time.Instant; import java.time.temporal.ChronoUnit; public class Main { public static void main(String[] args) { // same time in millis Instant now = Instant.ofEpochMilli(1262347200000l); // native plusSeconds() method to add 10 seconds Instant nowPlusTenSeconds = now.plusSeconds(10); // no native support for units like days. Instant nowPlusTwoDays = now.plus(2, ChronoUnit.DAYS); Instant nowMinusTwoDays = now.minus(Duration.ofDays(2)); System.out.println(nowPlusTenSeconds); System.out.println(nowPlusTwoDays); System.out.println(nowMinusTwoDays); } }