java.lang.IllegalArgumentException

Null 'key' argument.

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Solutions on the web9214

  • via ZK-Tracker by paowang, 1 year ago
    Null 'key' argument.
  • via Coderanch by Kaustubh G Sharma, 7 months ago
    Null 'key' argument.
  • via dynamicreports.org by Unknown author, 1 year ago
    Null 'key' argument.
  • Stack trace

    • java.lang.IllegalArgumentException: Null 'key' argument. at org.jfree.data.DefaultKeyedValues.setValue(DefaultKeyedValues.java:229) at org.jfree.data.DefaultKeyedValues2D.setValue(DefaultKeyedValues2D.java:337) at org.jfree.data.category.DefaultCategoryDataset.setValue(DefaultCategoryDataset.java:252) at org.zkoss.zkex.zul.impl.JFreeChartEngine.CategoryModelToCategoryDataset(JFreeChartEngine.java:554) at org.zkoss.zkex.zul.impl.JFreeChartEngine.access$3300(JFreeChartEngine.java:182) at org.zkoss.zkex.zul.impl.JFreeChartEngine$Line.createChart(JFreeChartEngine.java:1160) at org.zkoss.zkex.zul.impl.JFreeChartEngine.drawChart(JFreeChartEngine.java:336) at org.zkoss.zul.Chart.doSmartDraw(Chart.java:242) at org.zkoss.zul.Chart.access$100(Chart.java:82) at org.zkoss.zul.Chart$SmartDrawListener.onEvent(Chart.java:223) at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2732) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2703) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2644) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1710) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1495) at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:464) at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:316) at org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:215) at org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:135) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

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