HashMap with an int value as a key

Question

I am trying to create a HashMap with one key a string and the other an int. However, my IDE doesn't like it when I try to put an int as a key when creating a HashMap. Here is what I have currently:

private HashMap<String, int> exp = new HashMap<String, int>();

However, my IDE gives errors where I have "int", saying "Syntax error, insert "Dimensions" to complete ReferenceType". But I don't know what that means. So how would I use an int as a key in a HashMap?

Note that the int/Integer is the map *value*, not its key. – Andy Turner Oct 13 '15 at 02:55 — Andy Turner, Oct 13 '15 at 02:55

score 2 · Accepted Answer · answered Oct 13 '15 at 02:23

2

int is a primitive type. Use Integer instead.

private HashMap<String, Integer> exp = new HashMap<String, Integer>();

answered Oct 13 '15 at 02:23

Michael

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HashMap with an int value as a key

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