HashMap map = new HashMap( true ); // allow duplicates
map.add( "cat", "Meow" );
map.add( "ape", "Squeak" );
map.add( "ape", "Whoop" );
map.add( "bat", "Squeak" );
System.out.println( "map = " + map );
System.out.println();
System.out.println( "Enumerate the HashMap" );
Enumeration e = map.elements();
while ( e.hasMoreElements() )
System.out.println( e.nextElement() );
System.out.println();
e = map.keys();
System.out.print( "map.keys() = " );
while ( e.hasMoreElements() )
System.out.print( e.nextElement() + " " );
System.out.println();
e = map.keys( "Squeak" );
System.out.print( "map.keys( Squeak ) = " );
while ( e.hasMoreElements() )
System.out.print( e.nextElement() + " " );
System.out.println();
e = map.values( "ape" );
System.out.print( "map.keys( ape ) = " );
while ( e.hasMoreElements() )
System.out.print( e.nextElement() + " " );
System.out.println();
