ChronoZonedDateTime toInstant() method in Java with Examples

ChronoZonedDateTime toInstant() method in Java with Examples

Last Updated : 28 May, 2019

The toInstant() method of a ChronoZonedDateTime class is used to convert this ChronoZonedDateTime to the Instant. Syntax:

default Instant toInstant()

Parameters: This method do not accepts any parameter. Return value: This method returns Instant which is the same Instant represented by this ChronoZonedDateTime. Below programs illustrate the toInstant() method: Program 1:

Java

// Java program to demonstrate
// ChronoZonedDateTime.toInstant() method

import java.time.*;
import java.time.chrono.*;
import java.time.chrono.*;

public class GFG {
    public static void main(String[] args)
    {

        // create ChronoZonedDateTime object
        ChronoZonedDateTime time
            = ZonedDateTime
                  .parse(
                      "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]");

        // print ChronoZonedDateTime
        System.out.println("ChronoZonedDateTime: "
                           + time);

        // print result
        System.out.println("Instant: "
                           + time.toInstant());
    }
}

Output:

ChronoZonedDateTime: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
Instant: 2018-12-06T13:51:12.123Z

Program 2:

Java

// Java program to demonstrate
// ChronoZonedDateTime.toInstant() method

import java.time.*;
import java.time.chrono.*;
import java.time.chrono.*;

public class GFG {
    public static void main(String[] args)
    {

        // create ChronoZonedDateTime object
        ChronoZonedDateTime time
            = ZonedDateTime.parse(
                "1918-10-25T23:12:38.543+02:00[Europe/Paris]");

        // print ChronoZonedDateTime
        System.out.println("ChronoZonedDateTime: "
                           + time);

        // print result
        System.out.println("Instant: "
                           + time.toInstant());
    }
}

Output:

ChronoZonedDateTime: 1918-10-25T23:12:38.543Z[Europe/Paris]
Instant: 1918-10-25T23:12:38.543Z

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/ChronoZonedDateTime.html#toInstant--

ChronoZonedDateTime toInstant() method in Java with Examples

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