while(data.hasNextInt()){
                    synchronized (Relay.this){
                         if(nextId==null) {
                                nextId = data.nextInt();
                                inform();
                        }
                        try {
                            Relay.this.wait();
                        }
                        catch (InterruptedException e) {
                        }
                    }
                }
                koniec=true;
                inform();