Problem with ResourceBundle using Seam

[lara]

I have a method inside a java class which looks as follows:

protected static String readProperty(String propertyName, String bundleName) {
String value = ResourceBundle.getBundle(bundleName).getString(propertyName);
if (value == null) {
throw new MissingResourceException("Property not found", bundleName,
propertyName);
}
return value;
}

I am getting an exception:

Caused by: java.util.MissingResourceException: Can't find bundle for base name af_delegate, locale en_US

where af_delegate is the bundleName

Where should the af_delagte.properties file be located and how can I point to it?

The hierarchy of my project in Eclipse looks as follows (I'm using Seam):
ProjectName/af/core/src => java class including the method
ProjectName/resources/af/af_delagate.properties

Please help!
Regards,
Lara

[gavin.king]

It should go in WEB-INF/classes, just like in the Seam examples.

[lara]

I tried putting the file in WEB_INF/classes so now the hierarchy looks like this:
WEB_INF/classes/af_delegate.properties but it is still not working.
Should I add something to build.xml file?

[gavin.king]

Well, you have to make sure that the file ends up in the WEB-INF/classes drectory of the war, of course!

[lara]

Can you please be more specific and tell me what exactly I should add to the build.xml file?