Java Duration Class | toString() Method with Example

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

Duration Class toString() method

  • toString() method is available in java.time package.
  • toString() method is used to denote this Duration as a String by using the standards ISO-8601 format like PT8H6M12.345S.
  • toString() method is a non-static method, it is accessible with class object only and if we try to access the method with class name then we will get an error.
  • toString() method may throw an exception at the time of representing this object as a string.
    ArithmeticException: This exception may throw when the calculated exceed the length of this Duration.

Syntax:

    public String toString();

Parameter(s):

  • None

Return value:

The return type of this method is String, it represents this Duration as a String by using ISO-8601 standards format.

Example:

// Java program to demonstrate the example 
// of String toString() method of Duration

import java.time.*;

public class ToStringOfDuration {
    public static void main(String args[]) {
        // Instantiates two Duration objects
        Duration du1 = Duration.ofHours(2);
        Duration du2 = Duration.parse("P0DT0H1M");

        // Display du1 and du2
        System.out.println("du1: " + du1);
        System.out.println("du2: " + du2);
 
        // represents this Duration du1 as a string
        String to_string = du1.toString();

        // Display to_string
        System.out.println("du1.toString(): " + to_string);

        // represents thisDuration du2 as a string
        to_string = du2.toString();

        // Display to_string
        System.out.println("du2.toString(): " + to_string);
    }
}

Output

du1: PT2H
du2: PT1M
du1.toString(): PT2H
du2.toString(): PT1M






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