public String redo(){
  if (!canRedo()) {
    return "";
  }
  m_nCurrentEditAction++;
  UndoAction undoAction=m_undoStack.get(m_nCurrentEditAction);
  m_bNeedsUndoAction=false;
  undoAction.redo();
  m_bNeedsUndoAction=true;
  return undoAction.getRedoMsg();
}

public String redo ( ) { if ( ! canRedo ( ) ) { return "" ; } m_nCurrentEditAction ++ ; UndoAction undoAction = m_undoStack . get ( m_nCurrentEditAction ) ; m_bNeedsUndoAction = false ; undoAction . redo ( ) ; m_bNeedsUndoAction = true ; return undoAction . getRedoMsg ( ) ; }
redo the last edit action performed on the network . returns message representing the action performed .
