afreechart/src/main/java/org/afree/chart/AFreeChart.java
/**
     * Deregisters an object for notification of changes to the chart.
     *
     * @param listener  the listener (<code>null</code> not permitted)
     *
     * @see #addChangeListener(ChartChangeListener)
     */
Deregisters an object for notification of changes to the chart.
@param listener  the listener (null not permitted)


Deregisters an object for notification of changes to the chart . @param listener the listener ( null not permitted )
public void removeChangeListener(ChartChangeListener listener) {
        if (listener == null) {
            throw new IllegalArgumentException("Null 'listener' argument.");
        }
        this.changeListeners.remove(listener);
    }
public void removeChangeListener ( ChartChangeListener listener ) { if ( listener == null ) { throw new IllegalArgumentException ( "Null 'listener' argument." ) ; } this . changeListeners . remove ( listener ) ; }
Deregisters an object for notification of changes to the chart.
Deregisters an object for notification of changes to the chart .