IsoChronology zonedDateTime(TemporalAccessor) method in Java with Example

The zonedDateTime() method of java.time.chrono.IsoChronology class is used to get the zonal date and time according to Iso calendar system from another TemporalAccessor object.

Syntax:

public ZonedDateTime zonedDateTime(
          TemporalAccessor temporal)

Parameter: This method takes the object of any temporal accessor as a parameter.

Return Value: This method returns the zonal date and time according to Iso calendar system from another TemporalAccessor object.

Below are the examples to illustrate the zonedDateTime() method:



Example 1:

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// Java program to demonstrate
// zonedDateTime() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
            // creating and initializing
            // LocalDate Object
            LocalDate hidate
                = LocalDate.now();
  
            // getting IsoChronology
            // used in LocalDate
            IsoChronology crono
                = hidate.getChronology();
  
            // creating and initializing
            // TemporalAccessor object
            ZonedDateTime zonedate
                = ZonedDateTime
                      .parse(
                          "2018-10-25T23:12:31."
                          + "123+02:00[Europe/Paris]");
  
            // getting LocalDate and time for the
            // given TemporalAccessor object
            // by using zonedDateTime() method
            ChronoZonedDateTime<LocalDate> date
                = crono.zonedDateTime(zonedate);
  
            // display the result
            System.out.println(
                "LocalDate and time is: "
                + date);
        }
        catch (DateTimeException e) {
            System.out.println(
                "passed parameter can"
                + " not form a date");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

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Output:

LocalDate and time is: 2018-10-25T23:12:31.123+02:00[Europe/Paris]

Example 2:

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// Java program to demonstrate
// zonedDateTime() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
            // creating and initializing
            // LocalDate Object
            LocalDate hidate
                = LocalDate.now();
  
            // getting IsoChronology
            // used in LocalDate
            IsoChronology crono
                = hidate.getChronology();
  
            // creating and initializing
            // TemporalAccessor object
            LocalDateTime localdate
                = LocalDateTime.parse(
                    "2018-12-30T19:34:50.63");
  
            // getting LocalDate and time for the
            // given TemporalAccessor object
            // by using zonedDateTime() method
            ChronoZonedDateTime<LocalDate> date
                = crono.zonedDateTime(localdate);
  
            // display the result
            System.out.println(
                "LocalDate and time is: "
                + date);
        }
        catch (DateTimeException e) {
            System.out.println(
                "passed parameter can"
                + " not form a date");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

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Output:

passed parameter can not form a date
Exception thrown: java.time.DateTimeException: Unable to obtain ZonedDateTime from TemporalAccessor: 2018-12-30T19:34:50.630 of type java.time.LocalDateTime

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/IsoChronology.html#zonedDateTime-java.time.temporal.TemporalAccessor-

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