LocalTime adjustInto() method in Java with Examples

The adjustInto() method of LocalTime class is used to adjusts the specified temporal object to have the same time as this LocalTime Object. Syntax:

public Temporal adjustInto(Temporal temporal)

Parameters: This method accepts a single parameter temporal which is the target object to be adjusted, and not specifically null. Return value: This method returns the adjusted temporal object. Exception: The function throws two exceptions as described below:

• DateTimeException– if unable to make the adjustment
• ArithmeticException – if numeric overflow occurs

Below programs illustrate the adjustInto() method: Program 1:

Java

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

import java.time.*;

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

        // create a LocalTime Object
        LocalTime local
            = LocalTime.parse("09:32:42");

        // create Zone Time
        ZonedDateTime zonetime = ZonedDateTime.now();

        // print Zone Time
        System.out.println("ZonedDateTime"
                           + " before adjustInto():"
                           + zonetime.toString());

        // apply adjustInto()
        zonetime = (ZonedDateTime)local
                       .adjustInto(zonetime);

        // print Zone Time
        System.out.println("ZonedDateTime"
                           + " after adjustInto():"
                           + zonetime.toString());
    }
}

Output:

ZonedDateTime before adjustInto():2018-12-03T06:30:31.142Z[Etc/UTC]
ZonedDateTime after adjustInto():2018-12-03T09:32:42Z[Etc/UTC]

Program 2:

Java

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

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

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

        // create a LocalTime Object
        LocalTime local = LocalTime.parse("19:52:43");

        // create a Temporal object
        // which is equal to OffsetDateTime object
        OffsetDateTime passTemporal
            = OffsetDateTime.now();

        // print passed Value
        System.out.println("Before adjustInto() OffsetDateTime: "
                           + passTemporal);

        // apply adjustInto method
        // to adjust OffsetDateTime Temporal
        Temporal returnTemporal
            = local.adjustInto(passTemporal);

        // print results
        System.out.println("After adjustInto() OffsetDateTime: "
                           + (OffsetDateTime)returnTemporal);
    }
}

Output:

Before adjustInto() OffsetDateTime: 2018-12-03T06:30:33.927Z
After adjustInto() OffsetDateTime: 2018-12-03T19:52:43Z

Reference: https://docs.oracle.com/javase/10/docs/api/java/time/LocalTime.html#adjustInto(java.time.temporal.Temporal)