The ofEpochMilli() method of Instant class helps to get an Instant using milliseconds passed as parameter from the epoch of 1970-01-01T00:00:00Z. This returned milliseconds is used to get the different time units like seconds, etc by conversion.
Syntax:
public static Instant
ofEpochMilli(long epochMilli)
Parameters: This method accepts one parameter epochMilli is value of milliseconds from 1970-01-01T00:00:00Z.
Returns: This method returns Instant as the time from the Epoch as milliseconds.
Exception: This method throws DateTimeException if the result exceeds the maximum or minimum instant.
Below programs illustrate the ofEpochMilli() method:
Program 1:
// Java program to demonstrate// Instant.ofEpochMilli() method  import java.time.*;  public class GFG {    public static void main(String[] args)    {          // create a long variable for milliseconds        long milliseconds            = 999999000;          // get Instant using ofEpochMilli() method        Instant instant            = Instant.ofEpochMilli(milliseconds);          // print result        System.out.println("Instant: "                           + instant);    }} |
Output:
Instant: 1970-01-12T13:46:39Z
Program 2:
// Java program to demonstrate// Instant.ofEpochMilli() method  import java.time.*;  public class GFG {    public static void main(String[] args)    {          // get Instant using ofEpochMilli() method        // passed epoch millisecond is 73264271044L        Instant instant            = Instant.ofEpochMilli(73264271044L);          // print result        System.out.println("Instant: "                           + instant);    }} |
Output:
Instant: 1972-04-27T23:11:11.044Z
References: https://docs.oracle.com/javase/10/docs/api/java/time/Instant.html#ofEpochMilli(long)
