String hex = "1040014116";
StringBuilder output = new StringBuilder();
for (int i = 0; i < hex.length(); i+=2) {
    String str = hex.substring(i, i+2);
    output.append((char)Integer.parseInt(str, 16));
}
System.out.println(output);

int serverPort = 2003;
String address = "xx.xx.xx.xx";


try {
    InetAddress ipAddress = InetAddress.getByName(address);
    System.out.println(" IP address " + address + " and port " + serverPort);
    Socket socket = new Socket(ipAddress, serverPort);
    System.out.println("Socket ready");


    InputStream sin = socket.getInputStream();
    OutputStream sout = socket.getOutputStream();


    DataInputStream in = new DataInputStream(sin);
    DataOutputStream out = new DataOutputStream(sout);


    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String line = null;

    System.out.println("Введите данные и нажмите 'Ввод'");
    System.out.println();

    while (true) {
        line = reader.readLine();
        System.out.println("Отправка на сервер");
        out.writeUTF(line);// отправка текста
        System.out.println("Отправка: : " + line);
        out.flush(); // конец передачи
        line = in.readUTF(); // возврат текста от сервера
        System.out.println("Сервер: : " + line);
        System.out.println("Введите новую строку");
        System.out.println();
    }
} catch (Exception x) {
    x.printStackTrace();
}