Get Connected Components List

[<zboulouard AT gmail.com>]

Hello,

I have just started using GraphStream in a project and I find it a very
interesting tool.

My problem is that I want to retreive the list of connected components but I
only get either their count or at the very best their Ids.

I have tried this code but it doesn't return anything :

            ConnectedComponents cc = new ConnectedComponents();
            cc.init(graph);
            for(ConnectedComponent conn : cc) {
            System.out.println("Partie " + conn.id + " :");
            System.out.println("--------------");
            for(Node n : conn.getEachNode()) {
                Object[] attr = n.getAttribute("xy");
                Double x = (Double) attr[0];
                Double y = (Double) attr[1];
                System.out.println(x + " , " + y);
                }
            }

The nodes have an attribute "xy" which contains the coordinates stored as
Double[].

What did I do wrong? And how can I fix it?

Thanks!