Testing printer open ports

PrinterTest.java

    private static final String IP = "10.254.130.140";

    public static void main(String[] args) throws UnknownHostException, IOException {

        System.setProperty("java.util.concurrent.ForkJoinPool.common.parallelism", "200");
        
        IntStream.range(1, 64000).filter(LocaleResolver::testPort).forEach(System.out::println);

        List<Integer> ports = Arrays.asList(5000, 5001, 4000, 8000, 9400, 79, 9200, 9500, 9501, 515, 9100, 9600, 6100, 6110);

        ports.parallelStream().filter(LocaleResolver::testPrint).forEach(System.out::println);
    }

    private static boolean testPort(int port) {
        try {
            new Socket(IP, port).close();
        } catch (IOException e) {
            return false;
        }
        return true;
    }

    private static boolean testPrint(int port) {
        try {
            Socket socket = new Socket(IP, port);

            DataOutputStream outToServer = new DataOutputStream(socket.getOutputStream());
            outToServer.writeBytes(String.valueOf(port));

            socket.close();
        } catch (IOException e) {
            System.out.println("Port " + port + " gave error: " + e.getMessage());
            return false;
        }
        return true;
    }