Java Calculate Number of Nanoseconds Between two Instant

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

public class NanosecondsBetweenInstantExample {
    public static void main(String... args) {
        Instant startInstant = Instant.parse("2022-08-13T12:00:00.0Z");
        Instant endInstant = Instant.parse("2022-08-13T12:02:30.0Z");

        // Calculate Number of Nanoseconds Between two Instant
        long numberOfNanoseconds = ChronoUnit.NANOS.between(startInstant, endInstant);

        System.out.println(String.format("Number of nanoseconds between %s and %s is %d", startInstant, endInstant, numberOfNanoseconds));
    }
}

Number of nanoseconds between 2022-08-13T12:00:00Z and 2022-08-13T12:02:30Z is 150000000000