private void updateCalendar() {
Calendar cal = model.getSelection();
if (!"".equals(dayField.getText())) {
cal.set(Calendar.DAY_OF_MONTH, Integer.parseInt(dayField.getText()));
}
if (!"".equals(monthField.getText())) {
// Calendar month starts at 0
cal.set(Calendar.MONTH, Integer.parseInt(monthField.getText()) - 1);
}
if (!"".equals(yearField.getText())) {
cal.set(Calendar.YEAR, Integer.parseInt(yearField.getText()));
}
model.setSelection(cal);
}
