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Java Instant Class | ofEpochMilli() Method with Example

Instant Class ofEpochMilli() method: Here, we are going to learn about the ofEpochMilli() method of Instant Class with its syntax and example.
Submitted by Preeti Jain, on May 26, 2020

Instant Class ofEpochMilli() method

  • ofEpochMilli() method is available in java.time package.
  • ofEpochMilli() method is used to represent an instance of this Instant using the given milliseconds from the Java epoch standard format of 1970-01-01T00:00:00Z.
  • ofEpochMilli() method is a static method, it is accessible with the class name and if we try to access the method with the class object then we will not get an error.
  • ofEpochMilli() method may throw an exception at the time of representing milliseconds.
    DateTimeException: This exception may throw when this Instant value reaches out of the min or max instant.

Syntax:

    public static Instant ofEpochMilli(long milli_val);

Parameter(s):

  • long milli_val – represents the number of milliseconds in value since 1970-01-01T00:00:00Z.

Return value:

The return type of this method is Instant, it returns the Instant that represents the given milliseconds.

Example:

// Java program to demonstrate the example 
// of ofEpochMilli(long milli_val) method 
// of Instant

import java.time.*;

public class OfEpochMilliOfInstant {
    public static void main(String args[]) {
        long epoc_millis = 909990875;

        // Here, this method creates an Instant ins
        // by using the given epoch milliseconds
        // from the java epoch of 1970-01-01T00:00:00Z
        Instant ins = Instant.ofEpochMilli(epoc_millis);

        // Display ins
        System.out.println("Instant.ofEpochMilli(epoc_millis): " + ins);


        // Here, this method creates an Instant ins
        // by using the given epoch milliseconds
        // from the java epoch of 1970-01-01T00:00:00Z
        ins = Instant.ofEpochMilli(2000000);

        // Display ins
        System.out.println("Instant.ofEpochMilli(2000000): " + ins);
    }
}

Output

Instant.ofEpochMilli(epoc_millis): 1970-01-11T12:46:30.875Z
Instant.ofEpochMilli(2000000): 1970-01-01T00:33:20Z
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