A hash map that uses primitive ints for the key rather than objects.
Note that this class is for internal optimization purposes only, and may not be supported in future releases of Jakarta Commons Lang. Utilities of this sort may be included in future releases of Jakarta Commons Collections.
@author Justin Couch @author Alex Chaffee (alex@apache.org) @author Stephen Colebourne @see java.util.HashMap @since 2.0
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