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ChronoPeriod subtractFrom() method in Java with Examples

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The subtractFrom(Temporal) method of ChronoPeriod Interface in java.time.chrono package is used subtract this ChronoPeriod to the specified temporal object, passed as the parameter.

Syntax:

Temporal subtractFrom(Temporal temporalObject)

Parameters: This method accepts a parameter temporalObject which is the amount to be adjusted in this ChronoPeriod. It should not be null.

Return Value: This method returns an object of the same type with the temporalObject adjusted to it.

Exception: This method throws:

  • DateTimeException: if unable to subtract.
  • ArithmeticException: if numeric overflow occurs.

Below examples illustrate the ChronoPeriod.subtractFrom() method:

Program 1:




// Java code to show the function subtractFrom()
// to subtract the two given periods
  
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.ChronoUnit;
  
public class ChronoPeriodDemo {
  
    // Driver Code
    public static void main(String[] args)
    {
        // Defining period
        int year = 4;
        int months = 11;
        int days = 10;
        ChronoPeriod p1 = Period.of(year, months, days);
  
        // Get the time to be adjusted
        LocalDateTime currentTime
            = LocalDateTime.now();
  
        // Adjust the time
        // using subtractFrom() method
        System.out.println(
            p1.subtractFrom(currentTime));
    }
}


Output:

2014-07-07T14:22:21.929

Program 2:




// Java code to show the function subtractFrom()
// to subtract the two given periods
  
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.ChronoUnit;
  
public class ChronoPeriodDemo {
  
    // Driver Code
    public static void main(String[] args)
    {
        // Defining period
        int year1 = 2;
        int months1 = 7;
        int days1 = 8;
        ChronoPeriod p1 = Period.of(year1, months1, days1);
  
        // Get the time to be adjusted
        LocalDateTime currentTime
            = LocalDateTime.now();
  
        // Adjust the time
        // using subtractFrom() method
        System.out.println(
            p1.subtractFrom(currentTime));
    }
}


Output:

2016-11-09T14:22:26.600

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



Last Updated : 24 Jun, 2019
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