I have a JSpinner which I add to the JPanel I would like to set its time to the :GregorianCalendar calendar 
JSpinner spin         
        
One should do:
        SpinnerDateModel model = new SpinnerDateModel();
        model.setCalendarField(Calendar.DAY_OF_YEAR);
        JSpinner spinner = new JSpinner();
        spinner.setModel(model);
        SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy");
        java.sql.Time time = new java.sql.Time(osoba.getDataZatrudnienia().getTime().getTime());
        spinner.setValue(time);