修改树节点

修改jtree树节点时，需要先注册树节点的编辑事件，然后在编辑类中重写editingStopped和editingCanceled两个方法即可实现，如下：

注册事件：
tree.getCellEditor().addCellEditorListener(new Tree_CellEditorAction());

编辑的实现：
    class Tree_CellEditorAction implements CellEditorListener {
        public void editingStopped(ChangeEvent e) {
            Object selectnode = tree.getLastSelectedPathComponent();
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) selectnode;
            CellEditor cellEditor = (CellEditor) e.getSource();
            String newName = (String) cellEditor.getCellEditorValue();

            Object object = lastEditedNode.getUserObject();
            node.setUserObject(newName);
            

            DefaultTreeModel model = (DefaultTreeModel) tree.getModel();
            model.nodeStructureChanged(node);
            tree.setEditable(false);
        }

        public void editingCanceled(ChangeEvent e) {
            editingStopped(e);
        }
    }