Serialization problem -- nested ArrayLists are full of NULL instead of data

Hi guys, I'm using GWT and I have problem with sending nested ArrayLists through a RPC service. The data produced by the service look like this: ArrayList of objects of type A. every A has a (Array)List of B property every B has a (Array)List of C property that property contains

Re: Serialization problem -- nested ArrayLists are full of NULL instead of data

You may have to do a deep copy of your arrays. For example, I had to do a deep copy to get a copy of a window location parameter map: private HashMapString, ListString getParamMap() { MapString, ListString paramMap = Window.Location.getParameterMap(); //