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IsoChronology dateYearDay(int, int) method in Java with Example

  • Last Updated : 27 Mar, 2020

The dateYearDay() method of java.time.chrono.IsoChronology class is used to retrieve the local date according to the Iso calendar for the particular year and date.

Syntax:

public LocalDate dateYearDay(int prolepticYear,
                             int dayOfYear)

Parameter: This method takes the following arguments as parameter:

  • year: which is the integer propleptic year for the year field of LocalDate
  • day: which is the integer day for the day field of LocalDate

Return Value: This method returns the local date according to the Iso calendar for the particular year and date.

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



Example 1:

Java




// Java program to demonstrate
// dateYearDay() 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();
  
            // getting LocalDate for the
            // given date and year field
            // by using dateYearDay() method
            LocalDate date = crono.dateYearDay(1440, 24);
  
            // 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: 1440-01-24

Example 2:

Java




// Java program to demonstrate
// dateYearDay() 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();
  
            // getting LocalDate for the
            // given date and year field
            // by using dateYearDay() method
            LocalDate date = crono.dateYearDay(999999999, 32);
  
            // 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: +999999999-02-01

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/IsoChronology.html#dateYearDay-int-int-

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