Tuesday, April 5, 2011

Is it possible to use a primitive type (int) in as a generic type in Java?

Specifically, with a SortedMap<Vector<String>, int> I get "dimensions expected after this (int) token." Help!

From stackoverflow
  • No, this is not possible. Use Integer instead. Autoboxing takes care of the rest (i.e. for most purposes you can program as if you had actually used int because Java converts to and from Integer automatically for you).

    willcodejavaforfood : he was just after the badge
    Konrad Rudolph : @willcode…: You figured me out. :-/ If not for the badge, I would have given a wrong, thoroughly misleading answer that would have led the OP on a merry goose chase through the internet. Now, quick, get off the Internet. It's dangerous out here.
    willcodejavaforfood : If not for the badge you would not have posted the question at all I suspect :)
    Konrad Rudolph : @willcode…: I have *not* posted the question. I've just corrected the formatting.
  • If you knew that why did you ask the question? :)

    Jason Coco : He didn't ask the question, he just made some edits to it for readability ;)
    willcodejavaforfood : @Jason - OK that makes more sense :)
  • Konrad is correct. Alternately, you can use the trove class TObjectIntHashMap to map Objects to primitive ints.

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