ZonedDateTime form() method in Java with Examples

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The from() method of ZonedDateTime class in Java is used to get instance of ZonedDateTime from TemporalAccessor object passed as parameter. A TemporalAccessor represents an arbitrary set of date and time information and this method helps to get an instant of ZonedDateTime based on the specified TemporalAccessor object.

Syntax:

public static ZonedDateTime 
                from(TemporalAccessor temporal)

Parameters: This method accepts a single parameter temporal which represents the temporal object to convert. This is a mandatory parameter and it should not be NULL.

Return value: This method returns a zoned date-time.

Exception: This method throws a DateTimeException if unable to convert to an ZonedDateTime.

Below programs illustrate the from() method:

Program 1:

Java

// Java program to demonstrate
// ZonedDateTime.from() method
 
import java.time.*;
 
public class GFG {
    public static void main(String[] args)
    {
 
        // create a ZonedDateTime object
        ZonedDateTime zonedDT
            = ZonedDateTime.now();
 
        // create a ZonedDateTime object using
        // from() method
        ZonedDateTime result = ZonedDateTime.from(zonedDT);
 
        // print result
        System.out.println("ZonedDateTime: "
                           + result);
    }
}

Output:

ZonedDateTime: 2018-12-12T19:03:06.445Z[Etc/UTC]

Program 2:

Java

// Java program to demonstrate
// ZonedDateTime.from() method
 
import java.time.*;
 
public class GFG {
    public static void main(String[] args)
    {
 
        // create a OffsetDateTime object
        OffsetDateTime offset
            = OffsetDateTime.now();
 
        // create a ZonedDateTime object using
        // from() method
        ZonedDateTime result = ZonedDateTime.from(offset);
 
        // print result
        System.out.println("ZonedDateTime: "
                           + result);
    }
}