Period withDays() method in Java with Examples

Last Updated : 28 Nov, 2018
The withDays() method of Period Class is used to obtain a period with specified number of days. This number of days is passed as the parameter as integer value. Syntax: 
public Period withDays(int numberOfDays)
Parameters: This method accepts a parameter numberOfDays which is the number of days to be changed in this Period. Returns: This function returns a Period with the number of days passed as the parameter. Below is the implementation of Period.withDays() method: Example 1: Java 
// Java code to demonstrate withDays() method

import java.time.Period;

class GFG {
    public static void main(String[] args)
    {

        // Get the String to be withDaysd
        String period = "P1Y2M21D";

        // Parse the String into Period
        Period p = Period.parse(period);

        System.out.println("Period: " + p);

        // Get the number of days
        int numberOfDays = 5;

        // Change the numberOfDays of this Period
        // using withDays() method
        System.out.println("New Period: "
                           + p.withDays(numberOfDays));
    }
}
Output: 
Period: P1Y2M21D
New Period: P1Y2M5D
Example 2: Java 
// Java code to demonstrate withDays() method

import java.time.Period;

class GFG {
    public static void main(String[] args)
    {

        // Get the String to be withDaysd
        String period = "-P1Y2M21D";

        // Parse the String into Period
        Period p = Period.parse(period);

        System.out.println("Period: " + p);

        // Get the number of days
        int numberOfDays = -5;

        // Change the numberOfDays of this Period
        // using withDays() method
        System.out.println("New Period: "
                           + p.withDays(numberOfDays));
    }
}
Output: 
Period: P-1Y-2M-21D
New Period: P-1Y-2M-5D
Reference: https://docs.oracle.com/javase/9/docs/api/java/time/Period.html#withDays-int-
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