server socket

List<PrintStream> nouts = new ArrayList<>(); boolean isRun = true; ServerSocket svrSocket = new ServerSocket(10000); while (isRun) { Socket socket = svrSocket.accept(); new Thread(new Runnable() { public void run() { try { InputStream nis = socket.getInputStream(); OutputStream nos = socket.getOutputStream(); ReadWriteLock lock = new ReentrantReadWriteLock(); PrintStream nout = new PrintStream(nos, true); lock.writeLock().lock(); nouts.add(nout); lock.writeLock().unlock(); Scanner nscan = new Scanner(nis); String msg; do { msg = nscan.nextLine(); System.out.println(msg); lock.readLock().lock(); for (int i = 0; i < nouts.size(); i++) { nouts.get(i).println("나됴니서버:" + msg); } lock.readLock().unlock(); } while (!msg.equals("bye")); nscan.close(); nout.close(); nos.close(); nis.close(); socket.close(); } catch (IOException e) { } } }).start(); }