inv.getContents(), get rawslot of each item

Hello guys, I'm trying to get the raw slot from each item inside and inventory, I tried something like this

ItemStack[] items = inv.getContents();
for (ItemStack item : items) {
if (item != null) {
if (position < 27 && position > -1) {
item.getRawSlot()
}
} else {
}
}

But item class has no getRawSlot(), then my question is, how do I get the slot of the item I'm checking? thanks in advance

EDIT: I'm new to the forum and I don't know how to make a code formatted line, please be patient

I tried using

inv.getLocation(item)

but ItemStack and Inventory don't seem to get along ("The method getLocation() in the type Inventory is not applicable for the arguments (ItemStack)")

 

I don't get the point of using it sorry (not saying it's wrong), how do I use the current int to get the position? Thanks for the fast reply btw

EDIT: Holy Jesus you are genius, I'm still pretty tired and I didn't get it immediatly, thansk