Casting Item To Arrow

So to make a long story short, I need to detect when a player picks up an arrow that's been shot. I can detect it, however am having problems casting it to an Arrow object. Here's what I have so far:

Code:

    @EventHandler(priority = EventPriority.MONITOR)
    public void onPlayerPickupItem(final PlayerPickupItemEvent e) {
        Player p = e.getPlayer();
        Item it = e.getItem();
        ItemStack is = it.getItemStack();
        
        if (is.getType() == Material.ARROW) {
            p.sendMessage("Item is an arrow");
            if (it instanceof Projectile) { p.sendMessage("Instanceof Projectile"); }
            //^ Doesn't do anything
            if (it instanceof Arrow) { p.sendMessage("Instanceof Arrow"); }
            //^ Doesn't do anything
        }
    }

Am I just doing this wrong or am I missing something? All help is appreciated.

Right. Well, this isn't the most elegant solution, however it works:

Code:

    @EventHandler(priority = EventPriority.MONITOR)
    public void onPlayerPickupItem(final PlayerPickupItemEvent e) {
        Player p = e.getPlayer();
        Item it = (Item)e.getItem();
        ItemStack is = it.getItemStack();
        
        if (is.getType() == Material.ARROW) {
            UUID id = it.getUniqueId();
            for (Entity ent : p.getWorld().getEntitiesByClass(Arrow.class)) {
                if (((Arrow)ent).getUniqueId().equals(id)) {
                    //arrow.doWhateverNeedsToBeDone();
                }
            }
        }
    }

Any suggestions would still be great.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.