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Java Duration Class | getNano() Method with Example

Duration Class getNano() method: Here, we are going to learn about the getNano() method of Duration Class with its syntax and example.
Submitted by Preeti Jain, on May 14, 2020

Duration Class getNano() method

  • getNano() method is available in java.time package.
  • getNano() method is used to return the number of nanoseconds pass in 1 second in this Duration.
  • getNano() 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.
  • getNano() method does not throw an exception at the time of getting nanoseconds.

Syntax:

    public int getNano();

Parameter(s):

  • None

Return value:

The return type of this method is int, it returns the number of nanoseconds in 1 second and the duration is defined in some range like [0….999,999,999].

Example:

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

import java.time.*;

public class GetNanoOfDuration {
    public static void main(String args[]) {
        // Instantiates two Duration objects
        Duration du1 = Duration.between(LocalTime.MAX, LocalTime.MIN);
        Duration du2 = Duration.between(LocalTime.MIN, LocalTime.MAX);

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

        // returns the number of nanoseconds within 
        // the second in this Duration du1
        int get_nano_val = du1.getNano();

        // Display get_val
        System.out.println("du1.getNano(): " + get_nano_val);
        
        // returns the number of nanoseconds 
        /// within the second in this Duration du2 
        get_nano_val = du2.getNano();

        // Display get_val
        System.out.println("du2.getNano(): " + get_nano_val);
    }
}

Output

du1: PT-23H-59M-59.999999999S
du2: PT23H59M59.999999999S
du1.getNano(): 1
du2.getNano(): 999999999
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