Java Generics for class objects implementing a specific interface

Question

I am trying to define HashMap< ? , String> where ? is a class object from some implementation of a given interface, P.

For example, for interface ISearchEngine, i want ? to possibly be Google.class, Yahoo.class, Bing.class, etc.

newacct · Accepted Answer · 2009-10-07 19:31:34Z

6

How about

HashMap<Class<? extends ISearchEngine>, String>

answered Oct 7, 2009 at 19:31

newacct

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Comments

matt b · Accepted Answer · 2009-10-07 19:32:25Z

0

I think you want

HashMap<? extends ISearchEngine, String>

answered Oct 7, 2009 at 19:32

matt b

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