org.jfree.chart.event

## Interface OverlayChangeListener

- All Superinterfaces:
    java.util.EventListener
  All Known Implementing Classes:
    ChartPanel

      public interface OverlayChangeListener
      extends java.util.EventListener

  A listener for changes to an `Overlay`.
  Since:
    1.0.13

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `overlayChanged(OverlayChangeEvent event)` This method is called to notify a listener of a change event.

- - ### Method Detail

    - #### overlayChanged

          void overlayChanged(OverlayChangeEvent event)

      This method is called to notify a listener of a change event.
      Parameters:
        `event` - the event.