question: protected void notifyHistoryChangedListeners ( ) { Iterator < HistoryChangedListener > iter ; HistoryChangedListener l ; iter = m_HistoryChangedListeners . iterator ( ) ; while ( iter . hasNext ( ) ) { l = iter . next ( ) ; l . historyChanged ( new HistoryChangedEvent ( this , HISTORY_NAME , getHistory ( ) ) ) ; } }
target:  notifies the history listeners of the event.