public static void main(String[] args) throws Exception {
    JAXBContext jaxbContext = JAXBContext.newInstance(PropertiesWrapper.class);
    Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();

    PropertiesWrapper props =
        (PropertiesWrapper) jaxbUnmarshaller.unmarshal(new File(ServerApp.configFileName));

    for (Fluid fluid : props.getFluidList()) {
      System.out.println(fluid.getId());
      System.out.println(fluid.getName());
      System.out.println(fluid.getCost());
    }
    System.out.println(props.getArduinoPort());
    System.out.println(props.getClientPort());
    System.out.println(props.getServerAdress());
    System.out.println(props.getDatabaseName());
    System.out.println(props.getUsername());
  }