Question

I would implement a method that receives in input two object date and calculate the time passed between these two. How can I implement something like that? Some idea?

Answer 1

In what units do you expect the answer? Here’s one possibility:

public static String timeBetween(Date start, Date end) {
    long timeDiff = Math.abs(end.getTime() - start.getTime());
    String diff = String.format("in days: %d | in hours: %d | in minutes: %d",
        TimeUnit.MILLISECONDS.toDays(timeDiff),
        TimeUnit.MILLISECONDS.toHours(timeDiff),
        TimeUnit.MILLISECONDS.toMinutes(timeDiff));
    return diff;
}