IsoChronology date(TemporalAccessor) method in Java with Example

The date() method of java.time.chrono.IsoChronology class is used get the local date according to ISO system from the another TemporalAccessor object.

Syntax:

public LocalDate date(TemporalAccessor temporal)

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

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

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

Example 1:

// Java program to demonstrate
// date() 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 HijrahDate for the
            // given TemporalAccessor object
            // by using date() method
            LocalDate date = crono.date(zonedate);

            // display the result
            System.out.println("LocalDate is: " + date);
        }
        catch (DateTimeException e) {
            System.out.println("passed parameter can"
                               + " not form a date");
            System.out.println("Exception thrown: " + e);
        }
    }
}

Output:

LocalDate is: 2018-10-25

Example 2:

// Java program to demonstrate
// date() 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 HijrahDate for the
            // given TemporalAccessor object
            // by using date() method
            LocalDate date = crono.date(localdate);

            // display the result
            System.out.println("LocalDate is: " + date);
        }
        catch (DateTimeException e) {
            System.out.println("passed parameter can"
                               + " not form a date");
            System.out.println("Exception thrown: " + e);
        }
    }
}

Output:

LocalDate is: 2018-12-30

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