Iterate through a treemap object

Question

how can 'iterate' through treemap object like you can with an ArrayLIst
like:
Iterator it = arraylist.iterator();

Answer 1

Here is an example:
TreeMap users = (TreeMap)session.getAttribute("users");
Iterator i = users.entrySet().iterator();
while (i.hasNext()) {
Map.Entry e = (Map.Entry)i.next();
if (e != null) {
String key = (String)e.getKey();
if (key != null && key.length() > 0) {
String value = (String)e.getValue();
} // end if key not null
} // end if entry not null
} // end while