Hvae you looked at java.util.Collections? See the methods reverse(), which
reverses (moodifes) the collection, and reverseOrder(), which just provides
a convenient comparator.
Try something like
// Create a TreeMap that sorts in the reverse order
SortedMap sortedMap = new
TreeMap(java.util.Collections.reverseOrder());
// Now add all the data to it
sortedMap.putAll(ht);
Iterator iter = sortedMap.keySet().iterator();
while (iter.hasNext())
{
String key = (String)iter.next();
out.println(sortedMap.get(key));
}//end while
|---------+----------------------------->
| | "Veronique |
| | Couderc" |
| | <[EMAIL PROTECTED]|
| | ynet.co.uk> |
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| | 16-Jul-2004 17:25 |
| | Please respond to |
| | "Apache Torque |
| | Users List" |
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| | ache.org> |
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| To: "Apache Torque" <[EMAIL PROTECTED]>
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| Subject: SortedMap in reverse order
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Hi,
Do you know how to use SortedMap in a descending order?
This prints the elements in ascending order:
SortedMap sortedMap = new TreeMap();
sortedMap.putAll(ht);
Iterator iter = sortedMap.keySet().iterator();
while (iter.hasNext())
{
String key = (String)iter.next();
out.println(sortedMap.get(key));
}//end while
I found this on the net but can't make it work:
Creates a reversed version of this map.
Must be <code>O(n)</code>, where <code>n</code> is the number of
elements in this collection.
@return A map with the elements in reverse order.
public abstract SortedMap reversed();
Many thanks
vero
--
Regards
Veronique Couderc
SensoryNet Ltd, London
t. 0845 226 3012
f. 0845 226 8512
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