how do I remove all childern for root node in JTree?

Question

I am using JTree to display content. I would like to clear content/children of root node in JTree. How do I remove all childern for root node in JTree?

Answer 1

DefaultTreeModel model = (DefaultTreeModel) tree.getModel();
        DefaultMutableTreeNode root = (DefaultMutableTreeNode) model.getRoot();
        root.removeAllChildren();
        model.reload();