Collection in java map and HashMap

Question

I didn't understand the difference in the two below statement :-

 HashMap<Integer,String> hashmap = new HashMap<Integer,String>();

 Map<Integer,String> hashmap = new HashMap<Integer,String>();

The above two statement work in the same manner , no difference in the ouptput OR there is any time difference on running two statement.

http://stackoverflow.com/questions/383947/what-does-it-mean-to-program-to-an-interface — Reimeus, Oct 16 '15 at 14:44
Its just that `Map` is an interface which is implemented by `HashMap`. And it is the better of two options — SacJn, Oct 16 '15 at 14:48

score 0 · Answer 1 · answered Oct 16 '15 at 14:46

0

Map<> is the interface which HashMap<> implements. See here for more info.

answered Oct 16 '15 at 14:46

jonk

1 Answers1