# Header
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## Uses of Interface
org.jfree.chart.event.OverlayChangeListener

Packages that use OverlayChangeListener
org.jfree.chart: Core classes, including `JFreeChart` and `ChartPanel`.
org.jfree.chart.panel: Classes related to the `ChartPanel` class.

Uses of OverlayChangeListener in org.jfree.chart

Classes in org.jfree.chart that implement OverlayChangeListener
`class` `ChartPanel` A Swing GUI component for displaying a `JFreeChart` object.
`class` `PolarChartPanel` `PolarChartPanel` is the top level object for using the `PolarPlot`.

Uses of OverlayChangeListener in org.jfree.chart.panel

Methods in org.jfree.chart.panel with parameters of type OverlayChangeListener
`void` `Overlay.addChangeListener(OverlayChangeListener listener)` Registers a change listener with the overlay.
`void` `AbstractOverlay.addChangeListener(OverlayChangeListener listener)` Registers an object for notification of changes to the overlay.
`void` `Overlay.removeChangeListener(OverlayChangeListener listener)` Deregisters a listener from the overlay.
`void` `AbstractOverlay.removeChangeListener(OverlayChangeListener listener)` Deregisters an object for notification of changes to the overlay.

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