Home » Java » Java Reference » Java Instant Class

Java Instant Class | getEpochSecond() Method with Example

Instant Class getEpochSecond() method: Here, we are going to learn about the getEpochSecond() method of Instant Class with its syntax and example.
Submitted by Preeti Jain, on May 24, 2020

Instant Class getEpochSecond() method

• getEpochSecond() method is available in java.time package.
• getEpochSecond() method is used to get the number of seconds from the java epoch standard format of 1970-01-01T00:00:00Z.
• getEpochSecond() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• getEpochSecond() method does not throw an exception at the time of returning seconds.

Syntax:

    public long getEpochSecond();

Parameter(s):

• None

Return value:

The return type of this method is long, it returns the seconds from the epoch standard format of 1970-01-01T00:00:00Z.

Example:

// Java program to demonstrate the example 
// of getEpochSecond() method 
// of Instant

import java.time.*;
import java.time.temporal.*;

public class GetEpochSecondOfInstant {
    public static void main(String args[]) {
        // Instantiates two Instant
        Instant ins1 = Instant.parse("2006-04-03T05:10:15.00Z");
        Instant ins2 = Instant.parse("2007-06-05T10:20:30.00Z");

        // Display ins1,ins2
        System.out.println("Instant ins1 and ins2: ");
        System.out.println("ins1: " + ins1);
        System.out.println("ins2: " + ins2);

        System.out.println();

        // Here, this method gets the value of the 
        // epoch second from this Instant(ins1) i.e.
        // here the seconds will be retrieved
        // from the java epoch of 1970-01-01T00:00:00Z
        // to 2006-04-03T05:10:15.120Z
        long epocsec_val = ins1.getEpochSecond();

        // Display epocsec_val
        System.out.println("ins1.getEpochSecond(): " + epocsec_val);

        // Here, this method gets the value of the 
        // epoch second from this Instant(ins2) i.e.
        // here the seconds will be retrieved
        // from the java epoch of 1970-01-01T00:00:00Z
        // to 2007-06-05T10:20:30.00Z
        epocsec_val = ins2.getEpochSecond();

        // Display epocsec_val
        System.out.println("ins2.getEpochSecond(): " + epocsec_val);
    }
}

Output

Instant ins1 and ins2: 
ins1: 2006-04-03T05:10:15Z
ins2: 2007-06-05T10:20:30Z

ins1.getEpochSecond(): 1144041015
ins2.getEpochSecond(): 1181038830