Java Duration Class | toMillis() Method with Example

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

Duration Class toMillis() method

  • toMillis() method is available in java.time package.
  • toMillis() method is used to convert this Duration into the number of milliseconds.
  • toMillis() 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.
  • toMillis() method does not throw an exception at the time of converting this Duration to milliseconds.

Syntax:

    public long toMillis();

Parameter(s):

  • None

Return value:

The return type of this method is long, it returns the number of milliseconds exists in this Duration.

Example:

// Java program to demonstrate the example 
// of long toMillis() method of Duration

import java.time.*;

public class ToMillisOfDuration {
    public static void main(String args[]) {
        // Instantiates two Duration objects
        Duration du1 = Duration.ofMinutes(1);
        Duration du2 = Duration.parse("P0DT0H0M1S");

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

        // represents this Duration du1 of minutes into
        // number of milliseconds 
        long to_millis = du1.toMillis();

        // Display to_millis
        System.out.println("du1.toMillis(): " + to_millis);

        // represents this Duration du2 of seconds into
        // number of milliseconds 
        to_millis = du2.toMillis();

        // Display to_millis
        System.out.println("du2.toMillis(): " + to_millis);
    }
}

Output

du1: PT1M
du2: PT1S
du1.toMillis(): 60000
du2.toMillis(): 1000






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