Java Calculate Number of Hours Between two Instant

Tags: Java Instant ChronoUnit Java 8

In this Java core tutorial, we learn how to calculate the number of hours between two Instant objects using the java.time.temporal.ChronoUnit class in Java programming language.

How to get number of hours between two Instant in Java

In Java, we can use the ChronoUnit.HOURS.between() method to calculate the number of hours between two Instant values as the example Java code below.

HoursBetweenInstantExample.java

import java.time.Instant;
import java.time.temporal.ChronoUnit;

public class HoursBetweenInstantExample {
    public static void main(String... args) {
        Instant startInstant = Instant.parse("2022-08-13T07:00:00.0Z");
        Instant endInstant = Instant.parse("2022-08-13T12:30:00.0Z");

        // Calculate Number of Hours Between two Instant
        long numberOfHours = ChronoUnit.HOURS.between(startInstant, endInstant);

        System.out.println(String.format("Number of hours between %s and %s is %d", startInstant, endInstant, numberOfHours));
    }
}
The output as below.
Number of hours between 2022-08-13T07:00:00Z and 2022-08-13T12:30:00Z is 5

Happy Coding 😊

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