Nice article. However i suggest to have a generic approach that iterates and builds
string from the List of objects rather separate one for each List implementations such
as ArrayList, Vector, LinkedList. I mean to say change the method signature to
accept List (doesn’t matter what is the actual implementation).

The following articles shows printing nested arrays,
http://bethecoder.com/applications/tutorials/showTutorials.action?tutorialId=Java_Strings_StringUtil

Good luck.