Code

@SuppressWarnings("deprecation")
@EventHandler
public void onPlayerMove(final PlayerMoveEvent e) {
    Player player = e.getPlayer();
    if (player.getName().equals("philitup321")){
        if (player.getName().equals("zombies24")){


            getServer().getScheduler().scheduleSyncRepeatingTask(this, new Runnable(){
            public void run() {

                Player player = e.getPlayer();
                LivingEntity living = (LivingEntity) player;
                if(player.getNearbyEntities(10, 10, 10).equals(EntityType.SKELETON) ){
        if(player.getItemInHand().equals(Material.IRON_SWORD)) {

        player.getInventory().setItemInHand(addGlow(player.getItemInHand()));

            player.sendMessage(ChatColor.RED + " There are monsters nearby!!!");
            player.playSound(player.getLocation(), Sound.AMBIENCE_CAVE, 1, 1);
        }
        }


        }



            }, 0, 1 * 20);

        }
        }
}