java - Looping through the keys of a hashMap -


i have hashmap called africanpeople

private hashmap<integer, object> africanpeople = new hashmap<integer, object>();

the key age , value person object.

i want loop through hashmaps keys , people between age of 30 , 45.

is possible?

it possible, using 

for (integer key : map.keyset())

but hashmap not appropriate structure this. should use treemap instead, can directly return submap containing keys between 30 , 45:


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