Server Menu

Hi i have problem, i creating my own first plugin -> Server menu, i have all with count players via bungeecord api -> Message Listener. And i can´t find how to get server if offline and if server offline then api give me same number when server online and empty -> 0 .. how can i fix that ? i need get server when offline and when online Thank for help.. Sorry for my bad english

Spoiler: Code

Code (Text):

public void onEnable() {
        getServer().getMessenger().registerOutgoingPluginChannel(this, "BungeeCord");
        getServer().getMessenger().registerIncomingPluginChannel(this, "BungeeCord", this);
    }
 
public void onPluginMessageReceived(String channel, Player player, byte[] message) {
        if (!channel.equals("BungeeCord")) {
            return;
        }
     
        ByteArrayDataInput in = ByteStreams.newDataInput(message);
        String subchannel = in.readUTF();
        player.sendMessage(subchannel);
        if (subchannel.equals("PlayerCount")) {
            String server = in.readUTF();
            int playerCount = in.readInt();
            addServerMenu(server, playerCount, player);
         
        }
     
    }

public void addServerMenu(String server, int playerCount, Player player)
    {
        String mng1 = "mng1";
        if(mng1.equals(server)){
            createDisplay(Material.EMERALD_BLOCK, myInventory, 4, "Survival 01", "Status: Online", "Počet hráčů:" + playerCount + "/50", "", "");
        }
    }

public void getCount(Player player, String server) {
     
        if (server == null) {
            server = "ALL";
        }
     
        ByteArrayDataOutput out = ByteStreams.newDataOutput();
        out.writeUTF("PlayerCount");
        out.writeUTF(server);
        out.writeUTF("motd");
        player.sendPluginMessage(this, "BungeeCord", out.toByteArray());
     
    }

 

Can you send cde please i dont know how to work sockets