PermissionsEnumerator(Enumeration e) 
{
        perms = e;
        permset = getNextEnumWithMore();
}

 public synchronized boolean hasMoreElements() 
{
        // if we enter with permissionimpl null, we know
        // there are no more left.
        if (permset == null)
            return  false;
        // try to see if there are any left in the current one
        if (permset.hasMoreElements())
            return true;
        // get the next one that has something in it...
        permset = getNextEnumWithMore();
        // if it is null, we are done!
        return (permset != null);
}

 public synchronized Object nextElement() 
{
        // hasMoreElements will update permset to the next permset
        // with something in it...
        if (hasMoreElements()) {
            return permset.nextElement();
        } else {
            throw new NoSuchElementException("PermissionsEnumerator");
        }
}