iterating through a collection of collections?

I have created a TreeMap of TreeMaps. I can iterate through the main map just fine, but I can't figure out how to iterate through the sub map. (the goal is to iterate through each sub map while iterating through the main map, not just to iterate through a particular sub map, if that makes any difference)

Any suggestions? Is it even possible?

Comments

  • yes, its possible. you must nest two iterators, the first returns the treemaps one by one and the other iterates through the returned treemap.
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