public Map<Material, Integer> getItemsAmount(Crafting values, String listOfItems, Inventory inventory) {
        Map<Material, Integer> map = new HashMap<>();
        int amountFirst = 0;
        int amountSecond = 0;
        int amountThird = 0;

        for (ItemStack itemStacks : inventory) {
            if (listOfItems.equals(values.toString()) && itemStacks != null) {
                if (itemStacks.getType().toString().equals(values.getmatrialName())) {
                    amountFirst += itemStacks.getAmount();
                    map.put(itemStacks.getType(), amountFirst);

                } else if (itemStacks.getType().toString().equals(values.getmatrialNames1())) {
                    amountSecond += itemStacks.getAmount();
                    map.put(itemStacks.getType(), amountSecond);

                } else if (itemStacks.getType().toString().equals(values.getmatrialNames2())) {
                    amountThird += itemStacks.getAmount();
                    map.put(itemStacks.getType(), amountThird);
                }
            }
        }
        return map;
    }