print java bean member variables and values

I have a requirement to print the member variables and their values of a java bean object. I am thinking of using reflection to perform this task.
But the challenge is, if one of the member variable happens to be another java bean then the member variable and values of that bean also needs to be printed.
I am not sure how I can verify if a particular member variable is a java object or not. More specifically, the difficult part is to differentiate between jdk java objects(like String, Boolean, etc.,) and the custom java objects.
Do you have any ideas in accomplishing this?

Thanks...

Have you come across the class java.beans.XMLEncoder? It might do what you need already.

This class is great. But the only problem is, if the bean object contains a collection object as its member variable then it does not drill down further.

any suggestions please?