Vaadin Binder.bindInstanceFields(this);

Hi  im using Vaadin 8.0.1

I am trying to validate my which contains some form fields
as follows

void form(VerticalLayout pPartyLayout) {

        class MyForm extends CustomComponent {

            private static final long serialVersionUID = 1L;

            TextField name = new TextField();
            TextField mDesc = new TextField();
            DateField mDateField = new DateField();
            ComboBox<PersonData> mComboBox = new ComboBox<>();
            ComboBox<String> mStrComboBox = new ComboBox<>();

            public MyForm() {

And i m using Binder for validating it its not validating .
                    Binder<PersonData> binder = new Binder<>(PersonData.class);
                    binder.bindInstanceFields(this);
                    binder.setStatusLabel(emailStatus);

i dont want to write validation for each and every fields 
How can i use  binder.bindInstanceFields(this); in proper way
i am not getting any sample of using it.

Thanks
Nagaraj RC

What kind of validation do you want to do? The framework cannot guess them :P so you must provide either, validations with reference methods, lambdas or classes (through the Binder::withValidator method); or use the annotations available in the Bean Validation API. You can find documentation with examples in the following links:

https://vaadin.com/docs/-/part/framework/datamodel/datamodel-forms.html#validating-and-converting-user-input

https://vaadin.com/docs/-/part/framework/datamodel/datamodel-forms.html#datamodel.forms.beans