title: Iterator has .next() - is there a way to get the previous element instead of the next one?
body: <p>I have an Iterator that I use on a HashMap, and I save and load the iterator.
  is there a way to get the previous key in the HashMap with Iterator? (java.util.Iterator)</p>
  
  <h3>Update</h3>
  
  <p>I save it as an attribute in a Red5 connection and then load it back to continue working where i stopped.</p>
  
  <h3>Another update</h3>
  
  <p>I'm iterating through the keyset of the HashMap</p>