int n = getChildCount(root); int[] childIdx = new int[n]; Object[] children = new Object[n];  for (int i = 0; i < n; i++) { childIdx[i] = i; children[i] = getChild(root, i); }  fireTreeStructureChanged(this, new Object[] { root }, childIdx, children);
  public void reload()    throws NotImplementedException  {		// TODO  }