default integer form values

[Bas Vroling]

I have a form with a textfield bound to an object containing interger  
values:

TextField<Integer> residueNumber = new TextField<Integer>(
                                "residueNumber", new PropertyModel<Integer>(pso,
                                                "residueNumber"));
when this field is rendered it shows "0" as the 'empty' value, whereas  
string members are rendered real empty. It look strange this way, is  
there a way to display an empty field for an int?

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