Hi rick,
I think there's no easy way to test code like this with JUnit. I'm not an expert in unit testing but this is a problem
you should perhaps solve by designing your code with testing in mind. It's generally considered a better design if code is easier to test.
In this case you should think about it why you don't have accessor methods and how objects of this class are constructed in "normal" code. It's hard to give good answers without knowing more details but perhaps someone with more experience in unit tests could give you advice how to produce well-designed and well-testable code.
Marco