How to use

undo

method

in

weka.gui.arffviewer.ArffSortedTableModel

/**
 * performs an undo action
 */
@Override
public void undo() {
 if (canUndo()) {
  ((ArffSortedTableModel) m_TableArff.getModel()).undo();
  // notify about update
  notifyListener();
 }
}

/**
 * performs an undo action
 */
@Override
public void undo() {
 if (canUndo()) {
  ((ArffSortedTableModel) m_TableArff.getModel()).undo();
  // notify about update
  notifyListener();
 }
}