Item shows up as 'null' in textfield

General
1

Hi All

I’m going through the addressbook app and I’ve the following issue. The PostalCode in Person.java is by default ‘null’ (its an Integer).
Now, when I want to create a new Person, the PersonForm puts ‘null’ in the text field.
All the other fields are set to “” and don’t have this problem:

public class Person implements Serializable {
          private String firstName = "";
          private String lastName = "";
          private String email = "";
          private String phoneNumber = "";
          private String streetAddress = "";
          private Integer postalCode = null;
          private String city = "";
   ........

What can I do so the texfield is empty instead of showing ‘null’ for the postal code?

cheers
jeanluca

ps To create a new Person, the PersonForm does the following:

public void addContact() {
            // Create a temporary item for the form
            newPerson = new Person();
            setItemDataSource(new BeanItem(newPerson));
            newContactMode = true;
            setReadOnly(false);
}
2

You can set the null representation for TextFields. To accomplish what you want Insert the following at the end (must be after the setItemDataSource() call) of your addContact():

((TextField) contactEditor.getField("postalCode")).setNullRepresentation("");
3

yes, thats it! Thnx