JapaneseChronology date(int, int, int) method in Java with Example

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 proleptic 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

// 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() method
            JapaneseDate date
                = crono.date(2018, 05, 24);

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

Output:

JapaneseDate is: Japanese Heisei 30-05-24

Example 2:

Java

// 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() method
            JapaneseDate date
                = crono.date(1440, 05, 24);

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

Output

passed parameter 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-