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ChronoPeriod minus() method in Java with Examples

  • Last Updated : 27 Jun, 2019

The minus() method of ChronoPeriod class in Java is used to subtract the given amount of period from the specified period. This function operates separately on YEAR, MONTH and DAY.

Note: Normalization is not performed. 12 months and 1 year are different.

Syntax:

ChronoPeriod minus(TemporalAmount amountToSubtract)

Parameters: This method accepts a single parameter amountToSubtract, which is the amount to subtract from this period. It must not be null.

Return Value: This method returns a ChronoPeriod based on the given period with the requested period subtracted, and this must not be null.



Exceptions:

  • DateTimeException: This exception is returned if the specified amount has a non-ISO chronology or contains an invalid unit.
  • ArithmeticException: This exception is caught if numeric overflow occurs.

Below programs illustrate the above method:

Program 1:




// Java code to show the function minus()
// to subtract the two given periods
  
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.ChronoUnit;
  
public class ChronoPeriodDemo {
  
    // Function to subtract two given periods
    static void subtractChronoPeriod(ChronoPeriod p1, ChronoPeriod p2)
    {
  
        System.out.println(p1.minus(p2));
    }
  
    // Driver Code
    public static void main(String[] args)
    {
  
        // Defining first period
        int year = 4;
        int months = 11;
        int days = 10;
        ChronoPeriod p1 = Period.of(year, months, days);
  
        // Defining second period
        int year1 = 2;
        int months1 = 7;
        int days1 = 8;
        ChronoPeriod p2 = Period.of(year1, months1, days1);
  
        subtractChronoPeriod(p1, p2);
    }
}
Output:
P2Y4M2D

Program 2:




// Java code to show the function minus()
// to subtract the two given periods
  
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.ChronoUnit;
  
public class ChronoPeriodDemo {
  
    // Function to subtract two given periods
    static void subtractChronoPeriod(ChronoPeriod p1, ChronoPeriod p2)
    {
  
        System.out.println(p1.minus(p2));
    }
  
    // Driver Code
    public static void main(String[] args)
    {
        // Defining second period
        int year1 = 2;
        int months1 = 7;
        int days1 = 8;
        ChronoPeriod p1 = Period.of(year1, months1, days1);
  
        // Defining first period
        int year = 4;
        int months = 11;
        int days = 10;
        ChronoPeriod p2 = Period.of(year, months, days);
  
        subtractChronoPeriod(p1, p2);
    }
}
Output:
P-2Y-4M-2D

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/ChronoPeriod.html#minus-java.time.temporal.TemporalAmount-

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