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Duration minus(long, TemporalUnit) method in Java with Examples

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  • Last Updated : 29 Sep, 2021

The minus(long, TemporalUnit) method of Duration Class in java.time package is used to get an immutable copy of this duration with the specified duration subtracted, passed as the parameter. The duration to be subtracted is decided by converting the amountToAdd in the unit passed as the parameters.

Syntax: 

public Duration minus(long amountToAdd, TemporalUnit unit)

Parameters: This method accepts two parameters:  

  • amountToAdd which is the amount to be subtracted. It can be positive or negative but not null.
  • unit which is the TemporalUnit of the amount to be subtracted. It cannot be null.

Return Value: This method returns a Duration which is an immutable copy of the existing duration with the parameter amount of duration subtracted to it.

Exception: This method throws:  

  • ArithmeticException: if numeric overflow occurs.
  • UnsupportedTemporalTypeException: if the unit is not supported.

Below examples illustrate the Duration.minus() method:

Example 1: 

Java




// Java code to illustrate minus() method
 
import java.time.Duration;
import java.time.temporal.*;
 
public class GFG {
    public static void main(String[] args)
    {
 
        // Duration 1 using parse() method
        Duration duration1
            = Duration.parse("P2DT3H4M");
 
        // Get the duration subtracted
        // using minus() method
        System.out.println(duration1
                               .minus(5,
                                      ChronoUnit.HOURS));
    }
}

Output: 

PT46H4M

 

Example 2:

Java




// Java code to illustrate minus() method
 
import java.time.Duration;
import java.time.temporal.*;
 
public class GFG {
    public static void main(String[] args)
    {
 
        // Duration 1 using parse() method
        Duration duration1
            = Duration.parse("P0DT0H4M");
 
        // Get the duration subtracted
        // using minus() method
        System.out.println(duration1
                               .minus(2,
                                      ChronoUnit.DAYS));
    }
}

Output: 

PT-47H-56M

 

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/Duration.html#minus-long-java.time.temporal.TemporalUnit-
 


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