Помогите В разработке плагина

Code:

   // Где-то внутри твоего главного класса плагина
    private static class LocationEx
    {
        Location loc;
        String   caption;
        int      radiusSq;
        LocationEx(Location l, String c, int r)
        {
            this.loc      = l;
            this.caption  = c;
            this.radiusSq = r * r;
        }
        boolean isInside(Location test)
        {
            return test.getWorld().equals(loc.getWorld()) && test.distanceSquared(loc) <= radiusSq;
        }
    }
    private final Set<LocationEx> locations = new HashSet<>();
    @Override
    public void onEnable()
    {
        locations.clear();
        FileConfiguration config = getConfig();
        for(String point : config.getConfigurationSection("Points").getKeys(false))
            locations.add(new LocationEx(
                new Location(
                    getServer().getWorld(config.getString("Points." + point + ".world")),
                    config.getDouble("Points." + point + ".x"),
                    config.getDouble("Points." + point + ".y"),
                    config.getDouble("Points." + point + ".z")),
                point,
                config.getInt("Radius")));
    }
    @EventHandler
    public void onPlayerMove(PlayerMoveEvent event)
    {
        final Player player = event.getPlayer();
        final Location loc = player.getLocation();
        for(LocationEx locEx : locations)
            if(locEx.isInside(loc))
            {
                player.setHealth(10.0);
                return;
            }
        }
    }

В onDisable тоже лучше делать .clear(), так правильно.