Bug

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Can anyone tell me what this error means

Exception in thread "AWT-EventQueue-0" java.lang.IndexOutOfBoundsException: Index: 593, Size: 213
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at org.jfree.data.xy.XYSeries.getDataItem(XYSeries.java:446)
at org.jfree.data.xy.XYSeriesCollection.getX(XYSeriesCollection.java:245)
at org.jfree.data.xy.AbstractXYDataset.getXValue(AbstractXYDataset.java:77)
at org.jfree.chart.labels.AbstractXYItemLabelGenerator.createItemArray(AbstractXYItemLabelGenerator.java:250)
at org.jfree.chart.labels.AbstractXYItemLabelGenerator.generateLabelString(AbstractXYItemLabelGenerator.java:229)
at org.jfree.chart.labels.StandardXYToolTipGenerator.generateToolTip(StandardXYToolTipGenerator.java:155)
at org.jfree.chart.renderer.xy.AbstractXYItemRenderer.addEntity(AbstractXYItemRenderer.java:1430)
at org.jfree.chart.renderer.xy.XYLineAndShapeRenderer.drawSecondaryPass(XYLineAndShapeRenderer.java:1085)
at org.jfree.chart.renderer.xy.XYLineAndShapeRenderer.drawItem(XYLineAndShapeRenderer.java:801)
at org.jfree.chart.plot.XYPlot.render(XYPlot.java:2640)
at org.jfree.chart.plot.XYPlot.draw(XYPlot.java:2218)
at org.jfree.chart.JFreeChart.draw(JFreeChart.java:1039)
at org.jfree.chart.ChartPanel.paintComponent(ChartPanel.java:1274)
at javax.swing.JComponent.paint(JComponent.java:1005)
at javax.swing.JComponent.paintChildren(JComponent.java:842)
at javax.swing.JComponent.paint(JComponent.java:1014)
at javax.swing.JComponent.paintChildren(JComponent.java:842)
at javax.swing.JComponent.paint(JComponent.java:1014)
at javax.swing.JComponent.paintChildren(JComponent.java:842)
at javax.swing.JComponent.paint(JComponent.java:1014)
at javax.swing.JComponent.paintChildren(JComponent.java:842)
at javax.swing.JComponent.paint(JComponent.java:1014)
at javax.swing.JComponent.paintChildren(JComponent.java:842)
at javax.swing.JComponent.paint(JComponent.java:1014)
at javax.swing.JComponent.paintChildren(JComponent.java:842)
at javax.swing.JComponent.paint(JComponent.java:1014)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:559)
at javax.swing.JComponent.paintChildren(JComponent.java:842)
at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4970)
at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4916)
at javax.swing.JComponent.paint(JComponent.java:995)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97)
at java.awt.Container.paint(Container.java:1709)
at sun.awt.RepaintArea.paintComponent(RepaintArea.java:248)
at sun.awt.RepaintArea.paint(RepaintArea.java:224)
at sun.awt.motif.MComponentPeer.handleEvent(MComponentPeer.java:395)
at java.awt.Component.dispatchEventImpl(Component.java:4031)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Window.dispatchEventImpl(Window.java:1774)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

[david.gilbert]

It could be that you are updating the dataset in one thread while the chart is being redrawn in another. Since JFreeChart isn't thread safe, you need to make sure the dataset isn't updated this way.

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Thanks for the help