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Java code
public void btnDelete_actionPerformed(ActionEvent e)
{
TreePath path = jTree1.getSelectionPaths();
jTree1.removeSelectionPath(path);
}
DefaultMutableTreeNode son = (DefaultMutableTreeNode) tree.getSelectionPath().getLastPathComponent();
DefaultMutableTreeNode dad = (DefaultMutableTreeNode) son.getParent();
dad.remove(son);
treeModel.nodeStructureChanged(dad);