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Instant minusNanos() method in Java with Examples
  • Last Updated : 27 Nov, 2018

minusNanos() method of Instant class subtracts nanoseconds value passed as parameter from this instant and return the result as an instant object. This returned Instant is immutable.

Syntax:

public Instant minusNanos(long nanosToSubtract)

Parameters: This method accepts one parameter nanosToSubtract which is nanoseconds to be subtracted.

Returns: This method returns Instant after subtraction of nanoseconds.

Exception: This method throws following exceptions:



  • DateTimeException: if the result exceeds the maximum or minimum instant.
  • ArithmeticException: if numeric overflow occurs.

Below programs illustrate the minusNanos() method:

Program 1:




// Java program to demonstrate
// Instant.minusNanos() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create a Instant object
        Instant instant
            = Instant.parse("2018-12-30T19:34:50.63Z");
  
        // current Instant
        System.out.println("Initailize instant: "
                           + instant);
  
        // subtract 430000000 nanoseconds
        // means .43 seconds from this instant
        Instant returnedValue
            = instant.minusNanos(430000000);
  
        // print result
        System.out.println("Returned Instant: "
                           + returnedValue);
    }
}
Output:
Initailize instant: 2018-12-30T19:34:50.630Z
Returned Instant: 2018-12-30T19:34:50.200Z

Program 2:




// Java program to demonstrate
// Instant.minusNanos() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create a Instant object
        Instant instant = Instant.now();
  
        // current Instant
        System.out.println("Current instant: "
                           + instant);
  
        // subtract 540000000 nanoseconds
        // means .564 seconds from this instant
        Instant returnedValue
            = instant.minusNanos(540000000);
  
        // print result
        System.out.println("Returned Instant: "
                           + returnedValue);
    }
}
Output:
Current instant: 2018-11-27T06:43:58.495Z
Returned Instant: 2018-11-27T06:43:57.955Z

References: https://docs.oracle.com/javase/10/docs/api/java/time/Instant.html#minusNanos(long)

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