@EventHandler
public void onCraftItem(CraftItemEvent e)
{
    System.out.println("init");
    ItemStack[] stacks = e.getInventory().getMatrix(); // for some reason
               // has 10 elements
               // always

    //the above always has 10 elements which most likely
    //means that some will be null of nothing is contained
    System.out.println(stacks.length);

    for (ItemStack i : stacks)
    {
        if(i == null)
            continue;

        System.out.println(i.getItemMeta().getDisplayName());
    }
 }