Java tutorial
//package com.java2s; import java.util.Date; public class Main { /** * Takes the event's uptime timestamp, and * computes the UTC timestamp, in nanos. * * @param eventTimestamp The evnt * @return The timestamp in nanos. */ public static long computeJavaTimeStamp(long eventTimestamp) { long javaTime = new Date().getTime(); long nanoTime = System.nanoTime(); long newtimestamp = javaTime * 1000000 + (eventTimestamp - nanoTime); return newtimestamp; } }