HashMap map = new HashMap( true ); // allow duplicates
map.add( new Pair( "Dog", "Marble" ) );
map.add( new Pair( "Cat", "Beauty" ) );
map.add( new Pair( "Cat", "Agatha" ) );
System.out.println( "map = " + map );
System.out.println( "Enumerator through values..." );
Enumeration values = map.elements();
while ( values.hasMoreElements() )
System.out.println( " " + values.nextElement() );
System.out.println( "Enumerate through keys..." );
Enumeration keys = map.keys();
while ( keys.hasMoreElements() )
System.out.println( " " + keys.nextElement() );
