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JapaneseDate plus(long, TemporalUnit) method in Java

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  • Last Updated : 23 Jan, 2023
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The plus() method of java.time.chrono.JapaneseDate class is used to get the Japanese date after adding an amount of temporal accessor unit with the current Japanese date. Syntax:

public JapaneseDate plus(long amountToAdd,
                         TemporalUnit unit)

Parameter: This method takes the following argument as a parameter:

  • amountToAdd: which is the amount of temporal unit which is going to be added with the current japanese date.
  • unit: which is the object of temporal unit or chrono unit.

Return Value: This method returns the japanese date after adding an amount of temporal accessor unit with the current japanese date. Below are the examples to illustrate the plus() method: Example 1: 

Java




// Java program to demonstrate
// plus() method
 
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.*;
 
public class GFG {
    public static void main(String[] argv)
    {
        try {
 
            // Creating and initializing
            // JapaneseDate Object
            JapaneseDate hidate
                = JapaneseDate.of(
                    4000, 06, 23);
 
            // Display the result
            System.out.println(
                "Old Japanese date: "
                + hidate);
 
            // Adding some amount in Japanese date
            // by using plus() method
            JapaneseDate newdate
                = hidate.plus(
                    22,
                    ChronoUnit.DAYS);
 
            // Display the result
            System.out.println(
                "New Japanese date: "
                + newdate);
        }
        catch (DateTimeException e) {
 
            System.out.println(
                "Passed parameter can"
                + " not form a date");
 
            System.out.println(
                "Exception thrown: "
                + e);
        }
    }
}

Output:

Old Japanese date: Japanese Heisei 2012-06-23
New Japanese date: Japanese Heisei 2012-07-15

Example 2: 

Java




// Java program to demonstrate
// plus() method
 
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.*;
 
public class GFG {
    public static void main(String[] argv)
    {
        try {
 
            // Creating and initializing
            // JapaneseDate Object
            JapaneseDate hidate
                = JapaneseDate.of(
                    4000, 06, 23);
 
            // Display the result
            System.out.println(
                "Old Japanese date: "
                + hidate);
 
            // Adding some amount in Japanese date
            // by using plus() method
            JapaneseDate newdate
                = hidate.plus(
                    6,
                    ChronoUnit.YEARS);
 
            // Display the result
            System.out.println(
                "New Japanese date: "
                + newdate);
        }
        catch (DateTimeException e) {
 
            System.out.println(
                "Passed parameter can"
                + " not form a date");
 
            System.out.println(
                "Exception thrown: "
                + e);
        }
    }
}

Output:

Old Japanese date: Japanese Heisei 2012-06-23
New Japanese date: Japanese Heisei 2018-06-23

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/JapaneseDate.html#plus-long-java.time.temporal.TemporalUnit-


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