Restricting Jtree node from collapsing.

Hi all,
Is there any way by which i can restrict a Jtree node from collapsing?
please help,
thx,
Soni.

hi
i got it,
here is the solution
tree.addTreeWillExpandListener(new TreeWillExpandListener() {
public void treeWillExpand(TreeExpansionEvent e)throws ExpandVetoException {
public void treeWillCollapse(TreeExpansionEvent e)throws ExpandVetoException {
TreePath p = e.getPath();
DefaultMutableTreeNode n =
(DefaultMutableTreeNode)p.getLastPathComponent();
if (n == root) {
throw new ExpandVetoException(e);
-Soni

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import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import java.io.File;
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import org.w3c.dom.DOMException;
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import javax.swing.JPanel;
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import javax.swing.event.*;
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static final int rightWidth = 340;
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while ( listeners.hasMoreElements() ) {
TreeModelListener listener =
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Restricting Jtree node from collapsing.

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