Is Overoading an hashmap possible?

Question

What if i wanted to use one key for two objects. As in
Hashmap <String, Integer, String> .

for <State , Population, Capital >
Does it work and how do I go about it?

Answer 1

you can use nested hashmap for example:
Hashmap <String, Hashmap <Integer, String>>
it maps string key to a tuple of hashmap