public static <K, V extends Comparable<? super V>> Map<K, V>
	sortByValue( Map<K, V> map )
	{
		List<Map.Entry<K, V>> list =
				new LinkedList<Map.Entry<K, V>>( map.entrySet() );
		Collections.sort(list, new Comparator<Map.Entry<K, V>>() {
			public int compare(Map.Entry<K, V> o1, Map.Entry<K, V> o2) {
				return (o1.getValue()).compareTo(o2.getValue());
			}
		});

		Map<K, V> result = new LinkedHashMap<K, V>();
		for (Map.Entry<K, V> entry : list)
		{
			result.put( entry.getKey(), entry.getValue() );
		}
		return result;
	}