Method equals

src/main/java/org/bukkit/inventory/ItemStack.java:191–200

(Object obj)

    }

    @Override
    public boolean equals(Object obj) {
        if (!(obj instanceof ItemStack)) {
            return false;
        }

        ItemStack item = (ItemStack) obj;

        return item.getAmount() == getAmount() && item.getTypeId() == getTypeId();
    }

    @Override
    public ItemStack clone() {