Question

I found this and it seems to be working, I’m trying to iterate trough HashMap :

Iterate through a HashMap

But this portion of code shows warnings and I don’t have a clue how to make it not show them :

Iterator it = map.entrySet().iterator();
Map.Entry pairs = (Map.Entry) it.next();

Is there a way to “fix” this without using suppressWarnings annotation ?

Answer 1

Yes, use the correct generic definitions of it and pairs – assuming map is correctly defined.

For example:

Map<String, Integer> map = ...;
Iterator<Map.Entry<String, Integer>> it = map.entrySet().iterator();
Map.Entry<String, Integer> pairs = it.next();  // no need for cast