Vampire ench

@Override
    public boolean onCommand(CommandSender sender, Command command,
            String label, String[] args) {
        if (label.equalsIgnoreCase("fench")) {

            Player player = (Player) sender;

            if (sender.hasPermission("fench.cmd")) {
                if (args.length == 0) {
                    sender.sendMessage("§eCurrently added enchantments:");
                    sender.sendMessage("§a1 §7- §bLifesteal");
                    sender.sendMessage("§e/fench §a<number>");
                } else if (args.length == 1) {
                    if (args[0].equals("1")) {
                        if (!(player.getItemInHand() == (new ItemStack(
                                Material.AIR)))) {
                            Material imat = Material.DIAMOND_SWORD;
                            int iamt = 1;
                            String icna = ("§4Vampiresword");
                            ItemStack uItem = (new ItemStack(imat, iamt));
                            ItemMeta im = uItem.getItemMeta();
                            List<String> iLore = new ArrayList<String>();
                            iLore.add(new StringBuilder()
                                    .append(ChatColor.DARK_RED)
                                    .append(ChatColor.ITALIC).append("Vampire")
                                    .toString());
                            im.setLore(iLore);
                            im.setDisplayName(icna);
                            uItem.setItemMeta(im);
                            player.getInventory().addItem(uItem);
                        } else {
                            sender.sendMessage("You cannot enchant air, you fool.");
                        }
                    }
                }
            }
        }
        return false;
    }

    @EventHandler
    public void onHit(EntityDamageByEntityEvent event) {
        if (event.getDamage() > 0) {
            if (event.getDamager() instanceof Player) {
                Player damager = (Player) event.getDamager();
                int cHP = damager.getHealth();
                if (damager.getItemInHand().hasItemMeta()) {
                    if (damager
                            .getItemInHand()
                            .getItemMeta()
                            .getLore()
                            .contains(
                                    new StringBuilder()
                                            .append(ChatColor.DARK_RED)
                                            .append(ChatColor.ITALIC)
                                            .append("Vampire").toString())) {
                        if (cHP + 1 <= 20) {
                            damager.setHealth(cHP + 1);
                        } else {
                            damager.setHealth(20);
                        }
                    }
                }
            }
        }
    }