public void expand(TreePath[] paths){
  for (  TreePath path : paths) {
    expandJTreeNode(dataTree,dataTree.getModel(),path.getLastPathComponent(),dataTree.getRowForPath(path),0);
  }
}

public void expand ( TreePath [ ] paths ) { for ( TreePath path : paths ) { expandJTreeNode ( dataTree , dataTree . getModel ( ) , path . getLastPathComponent ( ) , dataTree . getRowForPath ( path ) , 0 ) ; } }
expand an array of paths
