ChronoPeriod getUnits() method in Java with Examples

Last Updated : 27 Jun, 2019
The getUnits() method of ChronoPeriod class in Java is used to get the set of units supported by this ChronoPeriod. The units that are supported are YEARS, MONTHS, DAYS in a list (in this order only). Syntax: 
List getUnits()
Parameters: This method does not accepts any parameter. Return Value This method returns a list containing years, months and days. Below programs illustrate the above method: Program 1: Java 
// Java code to show the function getUnits()
// to get the set of units supported by period

import java.time.*;
import java.time.chrono.*;
import java.time.temporal.ChronoUnit;

public class ChronoPeriodDemo {

    // Function to get the set of units supported by period
    static void getNumberOfDays(int year, int months, int days)
    {
        ChronoPeriod period = Period.of(year, months, days);
        System.out.println(period.getUnits());
    }

    // Driver Code
    public static void main(String[] args)
    {
        int year = 1;
        int months = 13;
        int days = 36;

        getNumberOfDays(year, months, days);
    }
}
Output: 
[Years, Months, Days]
Program 2: Java 
// Java code to show the function getUnits()
// to get the set of units supported by period

import java.time.*;
import java.time.chrono.*;
import java.time.temporal.ChronoUnit;

public class ChronoPeriodDemo {

    // Function to get the set of units supported by period
    static void getNumberOfDays(int year, int months, int days)
    {
        ChronoPeriod period = Period.ofDays(days);
        System.out.println(period.getUnits());
    }

    // Driver Code
    public static void main(String[] args)
    {
        int year = 0;
        int months = 0;
        int days = 0;

        getNumberOfDays(year, months, days);
    }
}
Output: 
[Years, Months, Days]
Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/ChronoPeriod.html#getUnits--
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