public static void expandAll(JTree tree) {
    TreePath[] paths = tree.getSelectionPaths();
    if (paths == null) {
      paths = new TreePath[] { new TreePath(tree.getModel().getRoot()) };
    }
    for (TreePath path : paths) {
      new ExpandContext(300, 10).expand(tree, path);
    }
  }
public static void expandAll(JTree tree)