toJavaList helper function
function [jxs] = toJavaList(xs, className)
%TOJAVALIST Converts a Matlab vector to a Java list.
%
% Copyright (C) Bayes Server. All rights reserved.
if ~exist('className','var')
className = class(xs(1));
end
jxs = java.util.Arrays.asList(toJavaArray(xs, className));
end