Groups > comp.lang.java.programmer > #6266

Re: Generics for a multiplevalue hashmap

From	markspace <-@.>
Newsgroups	comp.lang.java.programmer
Subject	Re: Generics for a multiplevalue hashmap
Date	2011-07-18 14:40 -0700
Organization	A noiseless patient Spider
Message-ID	<j0297q$vpe$1@dont-email.me> (permalink)
References	<2f4c5543-ceef-4cdb-8ff7-b978f30766e0@glegroupsg2000goo.googlegroups.com>

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On 7/18/2011 2:31 PM, Alexis Berry wrote:

> Unfortunately this does not compile. I think it might be because I am
> mixing generic types with real types. Am I correct?

Sort of.  You can't put constraints on the parameter type the way you 
are thinking.

 > public class MultipleValueHashMap<T, java.util.List<U>>  implements
 > Map<T, java.util.List<U>>  {

Should be:

   public class MultipleValueHashMap<T, U>  implements
   Map<T, java.util.List<U>>  {

I think.  I'll check it in a sec and post again if it needs correcting.

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Thread

Generics for a multiplevalue hashmap Alexis Berry <iamrichardjones@gmail.com> - 2011-07-18 14:31 -0700
  Re: Generics for a multiplevalue hashmap markspace <-@.> - 2011-07-18 14:40 -0700
  Re: Generics for a multiplevalue hashmap Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-07-18 21:00 -0300
  Re: Generics for a multiplevalue hashmap Arne Vajhøj <arne@vajhoej.dk> - 2011-07-18 23:01 -0400
  Re: Generics for a multiplevalue hashmap Roedy Green <see_website@mindprod.com.invalid> - 2011-07-19 03:59 -0700
  Re: Generics for a multiplevalue hashmap Esmond Pitt <esmond.pitt@bigpond.com> - 2011-07-19 22:24 +1000
    Re: Generics for a multiplevalue hashmap markspace <-@.> - 2011-07-19 08:31 -0700

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