Period getUnits() method in Java with Examples

The getUnits() method of Period class in Java is used to get the set of units supported by this Period. The units that are supported are YEARS, MONTHS, DAYS in a list (in this order only).

Syntax:

public 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 code to show the function getUnits()
// to get the set of units supported by period

import java.time.Period;
import java.time.temporal.ChronoUnit;

public class PeriodDemo {

    // Function to get the set of units supported by period
    static void getNumberOfDays(int year, int months, int days)
    {
        Period 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 code to show the function getUnits()
// to get the set of units supported by period

import java.time.Period;
import java.time.temporal.ChronoUnit;

public class PeriodDemo {

    // Function to get the set of units supported by period
    static void getNumberOfDays(int year, int months, int days)
    {
        Period 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/8/docs/api/java/time/Period.html#getUnits–