I tried setting a model to a spinner. It does not work, meaning that the display is not getting updated with the desired model.
  
  The following works:
    SpinnerDateModel dateModel = new SpinnerDateModel();
    JSpinner spin = new JSpinner(dateModel);
    
  The follwing does not work:
    SpinnerDateModel dateModel = new SpinnerDateModel();
    JSpinner spin = new JSpinner();
    spin.setModel(dateModel);