Hi Doug:

I have problems with nested collections:

/course/com3362/sp99/DJ/nested-collections

The object created in Main.java by

    // also add a D
	Ys.addElement(new D());
	    X aX1 = new X(Ys);

is not traversed.

Many other D-objects are also not traversed.

Please can you check.
I need this urgently for the BusStop example.

-- Karl