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How do I clear a JTree? I want to clear JTree to remove all nodes.

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1 Answer

answered by (171 points)
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Best answer
Try below line of code.

 

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