private void whileChatting() throws IOException {
        sendMessage("&nume"+nume);
        do {
            try {
                Object object = input.readObject();

                if(object instanceof String)
                    showMessage("n" + (String) object);

                    //here is where i want to receive objects so that's why i used instanceof

            } catch (ClassNotFoundException var2) {
                showMessage("Unknown data received!");
            }
        } while(!message.equals("SERVER - END"));
    }

@Override
    public void run() {

        String message = " ";
        try {
            Object object = new Object();
            while (true){
                object = reader.readObject();

                if(object instanceof String){
                    message = (String) object;
                    System.out.println(message);
                    if(message.startsWith("&nume")) {
                        nume = message.substring(5);
                        sendToAll(nume + " connected");
                        //playersState.addTo(nume , playersState.getLobbyPlayers()); <------------
                        //here is the problem
                    }
                    else if(message.startsWith("/left")){
                        sock.close();
                        sendToAll(nume + " left");
                        break;
                    }
                    else sendToAll(nume + " - " +message);
                }

            }

        } catch (Exception ex) {
            try {
                System.out.println("inchis");
                sock.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                System.exit(0);
            }
        }


    }

public void addTo(String name, List<String> list){
    list.add(name);
}