The between() method of Period class in Java is used to obtain a period consisting of the number of years, months, and days between two given dates (including start date and excluding end date).
This period is obtained as follows:
- Remove complete months.
- Now, calculate the remaining number of days.
- Then, adjust to ensure that both have the same sign.
- Now, split the number of months into years and months based on a 12 month year.
- Consider a month, if the end day-of-month is greater than or equal to the start day-of-month (Eg.: from 2017-05-12 to 2018-07-18 is one year, two months and six days).
Note: Period obtained from above formula can be a negative, if the end is before the start. The negative sign will be the same in each of year, month and day.
Syntax:
public static Period between(LocalDate startDateInclusive,
LocalDate endDateExclusive)
Parameters:
- startDateInclusive – The start date is inclusive and must not be null.
- endDateExclusive – The end date is exclusive and must not be null.
Return Value: The between() function of period returns the period between the given start and end date.
Below is the implementation of above function:
// Java code to show the period// between given start and end dateimport java.time.LocalDate;import java.time.Period;  public class PeriodClass {      // Function to calculate period between    // start and end date    static void calculatePeriod(LocalDate startDate,                                LocalDate endDate)    {        Period period = Period.between(startDate, endDate);        System.out.println("Period between start and end "                           + "date is : " + period);    }      // Driver Code    public static void main(String[] args)    {        // Start date        LocalDate startDate = LocalDate.parse("2017-02-13");          // End date        LocalDate endDate = LocalDate.parse("2018-08-20");          calculatePeriod(startDate, endDate);    }} |
Output:
Period between start and end date is : P1Y6M7D
