/* Add date field validators */
StrictTextFieldValidator validator = new StrictTextFieldValidator();
frame.getWidget("FirstNameField").addValidator(validator);
frame.getWidget("LastNameField").addValidator(validator);
frame.getWidget("EmailField").addValidator(validator);
frame.getWidget("BirthDateField").addValidator(new DateFieldValidator(DateFieldValidator.EUROPEAN_DATE));
okButton = (Button) frame.getWidget("OKButton");
frame.show();
}