...
//check player's inventory for item!!
			ItemStack is;
			if(itemID.contains(":")) {
				String[] sarr = itemID.split(":");
				int meta = Integer.parseInt(sarr[1]);
				is = new ItemStack(item, 1, meta);
			} else {
				is = new ItemStack(item, 1, OreDictionary.WILDCARD_VALUE);
			}

			boolean hasItems = scanInventory((EntityPlayer) sender.getCommandSenderEntity(), is, amount);
			if(!hasItems) {
				sender.addChatMessage(new ChatComponentText(EnumChatFormatting.RED + "You do not have the sufficient items specified in your inventory!"));
				return;
			}
...
	public boolean scanInventory(EntityPlayer player, ItemStack itemstack, int amount) {
		ItemStack[] inv = player.getInventory();
		int counter = 0;

		if(inv.length == 0) return false;

		for(ItemStack i : inv) {
			if(ItemStack.areItemsEqual(i, itemstack)) {
				counter += i.stackSize;
			}
		}

		if(counter >= amount) {
			return true;
		} else {
			return false;
		}
	}