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JapaneseChronology date(int, int, int) method in Java with Example
  • Last Updated : 27 Mar, 2020

The date() method of java.time.chrono.JapaneseChronology class is used get the local date according to japanese calendar system for the given year, month and day.

Syntax:

public JapaneseDate date(int prolepticYear,
                         int month,
                         int dayOfMonth)

Parameter: This method takes the following arguments as parameter.

  • prolepticYear: integer propleptic year for the year field of Japanese
  • month: integer month for the month field of Japanese
  • day: integer day for the day field of Japanese

Return Value: This method returns the Japanese date according to Japanese calendar system for the given year, month and day.

Exception: This method throws DateTimeException if the given field of day, month and year are unable to form a structured date.



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
            // JapaneseDate Object
            JapaneseDate lodate
                = JapaneseDate.now();
  
            // getting JapaneseChronology
            // used in JapaneseDate
            JapaneseChronology crono
                = lodate.getChronology();
  
            // getting JapaneseDate for the
            // given date, month and year field
            // by using date() mehtod
            JapaneseDate date
                = crono.date(2018, 05, 24);
  
            // display the result
            System.out.println(
                "JapaneseDate is: "
                + date);
        }
        catch (DateTimeException e) {
            System.out.println("passed paramter can "
                               + "not form a date");
            System.out.println("Exception thrown: " + e);
        }
    }
}
Output:
JapaneseDate is: Japanese Heisei 30-05-24

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
            // JapaneseDate Object
            JapaneseDate lodate
                = JapaneseDate.now();
  
            // getting JapaneseChronology
            // used in JapaneseDate
            JapaneseChronology crono
                = lodate.getChronology();
  
            // getting JapaneseDate for the
            // given date, month and year field
            // by using date() mehtod
            JapaneseDate date
                = crono.date(1440, 05, 24);
  
            // display the result
            System.out.println(
                "JapaneseDate is: "
                + date);
        }
        catch (DateTimeException e) {
            System.out.println(
                "passed paramter can "
                + "not form a date");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}
Output:
passed paramter can not form a date
Exception thrown:
    java.time.DateTimeException:
    JapaneseDate before Meiji 6 is not supported

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

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