LocalTime ofInstant() method in Java with Examples

The ofInstant() method of a LocalTime class is used to obtain an instance of LocalTime from an Instant and zone ID passed as parameters.In this method First, the offset from UTC/Greenwich is obtained using the zone ID and instant. Then, the local time has calculated from the instant and offset.

Syntax:

public static LocalTime 
       ofInstant(Instant instant, ZoneId zone)

Parameters: This method accepts two parameters:

• instant: It is the instant from which the LocalTime object is to be created. It should not be null.
• zone: It is the zone of the specified time. It should not be null.

Return value: This method returns the created LocalTime object created from the passed instant.

Below programs illustrate the ofInstant() method:

Program 1:

// Java program to demonstrate
// LocalTime.ofInstant() method

import java.time.*;

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

        // create an Instant object
        Instant instant
            = Instant.parse("2018-12-17T19:59:44.770Z");

        // print Instant
        System.out.println("Instant: " + instant);

        // create ZoneId
        ZoneId zoneid = ZoneId.systemDefault();

        // print ZoneId
        System.out.println("ZoneId: " + zoneid);

        // apply ofInstant()
        LocalTime value
            = LocalTime.ofInstant(instant, zoneid);

        // print result
        System.out.println("Generated LocalTime: "
                           + value);
    }
}

Output:

Instant: 2018-12-17T19:59:44.770Z
ZoneId: Etc/UTC
Generated LocalTime: 19:59:44.770

Program 2:

// Java program to demonstrate
// LocalTime.ofInstant() method

import java.time.*;

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

        // create an Instant object
        Instant instant
            = Instant.parse("2016-11-11T09:19:22Z");

        // print Instant
        System.out.println("Instant: " + instant);

        // apply ofInstant()
        LocalTime value
            = LocalTime.ofInstant(instant,
                                  ZoneId.of("Asia/Dhaka"));

        // print result
        System.out.println("Generated LocalTime: "
                           + value);
    }
}

Output:

Instant: 2016-11-11T09:19:22Z
Generated LocalTime: 15:19:22

References: https://docs.oracle.com/javase/10/docs/api/java/time/LocalTime.html#ofInstant(java.time.Instant, java.time.ZoneId)