/**
  * Sets the item at row #<code>pos</code> to be <code>newEntry</code>
  *
  * @param newEntry - the object to be assigned to row #<code>pos</code> param pos - the row number
  *     to be set.
  */
 public void setObject(Object newEntry, int pos) {
   elements.remove(pos);
   elements.put(pos, newEntry);
 }