Java Duration Class | withNanos() Method with Example

Duration Class withNanos() method: Here, we are going to learn about the withNanos() method of Duration Class with its syntax and example.
Submitted by Preeti Jain, on May 17, 2020

Duration Class withNanos() method

  • withNanos() method is available in java.time package.
  • withNanos() method is used to represent this Duration with the given nanoseconds.
  • withNanos() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
  • withNanos() method may throw an exception at the time of representing Duration with the given nanoseconds.
    DateTimeException: This exception may throw when the given parameter is not valid.

Syntax:

    public Duration withNanos(int nanos_val);

Parameter(s):

  • int nanos_val – represents nanoseconds to represent this Duration from [0...999,999,999].

Return value:

The return type of this method is Duration, it returns this Duration with the given with the given nanoseconds.

Example:

// Java program to demonstrate the example 
// of withNanos(int nanos_val) method of Duration

import java.time.*;

public class WithNanosOfDuration {
    public static void main(String args[]) {
        // Instantiates two Duration objects
        Duration du1 = Duration.ofMinutes(2);
        Duration du2 = Duration.parse("P0DT1H0M");

        // Display du1 and du2
        System.out.println("du1: " + du1);
        System.out.println("du2: " + du2);

        // represents this Duration
        // du1 with the given nanoseconds
        Duration with_nanos = du1.withNanos(50000);

        // Display with_nanos
        System.out.println("du1.withNanos(50000): " + with_nanos);

        // represents this Duration
        // du2 with the given nanoseconds
        with_nanos = du2.withNanos(50000);

        // Display with_nanos
        System.out.println("du2.withNanos(50000): " + with_nanos);
    }
}

Output

du1: PT2M
du2: PT1H
du1.withNanos(50000): PT2M0.00005S
du2.withNanos(50000): PT1H0.00005S






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