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What is Duration.ofHours() in Java?

abhilash

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

ofHours() is a staticThe methods in Java that can be called without creating an object of the class. method of the Duration class that is used to get a Duration class instance that corresponds to the number of standard hours. The seconds are determined using the standard definition of an hour, which is 3600 seconds.

Duration is defined in the java.time package. To import the Duration class, use the import statement below:


import java.time.Duration;

Syntax

public static Duration ofHours(long hours)

Parameters

  • long hours: The number of hours. It can be positive or negative.

Return value

The method returns a Duration object.

Code

In the code below, we create two Duration class objects with a positive and negative number of hours. Then we print the objects to the console.

import java.time.Duration;
public class Main{
public static void main(String[] args) {
Duration positiveHours = Duration.ofHours(5);
System.out.println("Positive Hours - " + positiveHours);
Duration negativeHours = Duration.ofHours(-5);
System.out.println("Negative Hours - " + negativeHours);
}
}

RELATED TAGS

java
communitycreator

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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