Question

I’m trying to implement this method:

/**
 * Adds the given span to the given date and returns a new date.
 */
public java.util.Date add(java.util.Date d, long span, java.util.concurrent.TimeUnit unit) {
    // ...
}

I can just do a switch on the unit. Is there a library that does this? apache commons? Joda?

Answer 1

You don’t need to switch on the unit – just ask it for the right number of milliseconds:

return new Date(d.getTime() + unit.toMillis(span));

On the other hand, I’d definitely try to use Joda instead 🙂