On Thu, 05 Apr 2007, Toscano wrote:
> The getCountries() method outputs the list of countries depending on the
> language stored in session.
> But if I create the DropDownChoice as you said:
>
> countries = new DropDownChoice("country",
> new Model() {
> public List getObject()
> {
> return getCountries();}
> }, new ChoiceRenderer ("countryName", "countryID"));
>
> I have a RunTimeException: java.lang.NullPointerException: List of choices
> is null - Was the supplied 'Choices' model empty?
As far as I remember, at least in 2.0 DropDownChoice takes
in two models: a list of the choices, and the initial
choice. (By the way, this is an excellent example of where
generics make the constructor more explicit).
So double-check that you are supplying the choices
correctly, and not in fact invoking a constructor that only
determines the default choice.
--
Timo Rantalaiho
Reaktor Innovations Oy <URL: http://www.ri.fi/ >
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