当Jtree.setEditable(true)后修改了节点的title,按回车,做些判断后怎么让修改失效，改回原来的title（gularess(无吃哪拉)再帮帮忙）

Question

因为编辑是在你双击树结点后发生的，tree.addMouseListener,把相应的选中title记住就行了！如果失败，就设回来！

Answer 1

我记住了选中的title了，而且test.setText(oldTitle);
但是不行呀，怎么回事？

Answer 2

用TreeModelListener:
    treeModel=tree.getModel();
    treeModel.addTreeModelListener(new TreeModelListener(){
    public void treeNodesChanged(TreeModelEvent e) {
        DefaultMutableTreeNode node;
        node = (DefaultMutableTreeNode)
                 (e.getTreePath().getLastPathComponent());        /*
         * If the event lists children, then the changed
         * node is the child of the node we've already
         * gotten.  Otherwise, the changed node and the
         * specified node are the same.
         */
        try {
            int index = e.getChildIndices()[0];
            node = (DefaultMutableTreeNode)
                   (node.getChildAt(index));
        } catch (NullPointerException exc) {}
        
        if(操作数据库失败){
          node.setUserObject(oldTitle);
        }    }
    public void treeNodesInserted(TreeModelEvent e) {
    }
    public void treeNodesRemoved(TreeModelEvent e) {
    }
    public void treeStructureChanged(TreeModelEvent e) {
    }
  });