public void addClient(ClientHandler handler) {
   // TODO Auto-generated method stub
   handler.registerObserver(this);
   clientList.add(handler);
   ThreadManager.getInstance().execute(handler);
   System.out.println("Ilosc klientow: " + clientList.size());
 }
 @Override
 public void sendGameEnd() {
   for (ClientHandler handler : clientList) handler.sendGameEnd();
 }
 @Override
 public void sendMsg(String msg) {
   // TODO Auto-generated method stub
   for (ClientHandler handler : clientList) handler.sendMsg(msg);
 }
 @Override
 public void sendCurrentRound(int i) {
   // TODO Auto-generated method stub
   for (ClientHandler handler : clientList) handler.sendCurrentRound(i);
 }
 @Override
 public void changePawn(Player p) {
   // TODO Auto-generated method stub
   for (ClientHandler handler : clientList) handler.sendPawn(p);
 }
 @Override
 public void joinPlayer(Player player) {
   // TODO Auto-generated method stub
   for (ClientHandler handler : clientList) handler.addPlayer(player);
 }