"Experiment is in use; delete anyway?",
"Experiment " + reason + "; delete anyway?",
  private void deleteExperiment(DefaultMutableTreeNode node) {    if (node == null) return;    Experiment experiment = (Experiment)node.getUserObject();    if (!experiment.isEditable()) {      int result = JOptionPane.showConfirmDialog(this,						 "Experiment is in use; delete anyway?",						 "Experiment Not Editable",						 JOptionPane.YES_NO_OPTION,						 JOptionPane.WARNING_MESSAGE);      if (result != JOptionPane.YES_OPTION)	return;    }    model.removeNodeFromParent(node);    experimentNames.remove(experiment.getExperimentName());  }