I have used jfreeChart for my project and I have a problem about representation of graph on unix but, the same code can run on the window.
Here is the error
500 Internal Server Error
java.lang.NoClassDefFoundError at com.jrefinery.chart.axis.Axis.<init>(Unknown Source) at com.jrefinery.chart.axis.CategoryAxis.<init>(Unknown Source) at com.jrefinery.chart.axis.HorizontalCategoryAxis.<init>(Unknown Source) at com.jrefinery.chart.ChartFactory.createAreaChart(Unknown Source) at _auc__graph._graphAssetYear.createChart(_graphAssetYear.java:200) [SRC:/auc_graph/graphAssetYear.jsp:188] at _auc__graph._graphAssetYear.createImage(_graphAssetYear.java:288) [SRC:/auc_graph/graphAssetYear.jsp:276] at _auc__graph._graphAssetYear._jspService(_graphAssetYear.java:356) [SRC:/auc_graph/graphAssetYear.jsp:287] at com.orionserver[Oracle9iAS (9.0.2.2) Containers for J2EE].http.OrionHttpJspPage.service(OrionHttpJspPage.java:56) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:302) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:407) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:330) at javax.servlet.http.HttpServlet.service(HttpServlet.java:336) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:66) at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:283) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:539) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:285) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:231) at cdgs.framwork.controller.LedCtr.dispatch(LedCtr.java:49) at cdgs.framwork.controller.LedCtr.doAssetGraph(LedCtr.java:470) at cdgs.framwork.controller.LedCtr.ProcessRequest(LedCtr.java:311) at cdgs.framwork.controller.LedCtr.service(LedCtr.java:60) at javax.servlet.http.HttpServlet.service(HttpServlet.java:336) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:66) at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:283) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:539) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:285) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:231) at cdgs.framwork.system.Dispatcher.sendToController(Dispatcher.java:54) at cdgs.framwork.system.Dispatcher.service(Dispatcher.java:42) at javax.servlet.http.HttpServlet.service(HttpServlet.java:336) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:66) at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:283) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:539) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:285) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:771) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.AJPRequestHandler.run(AJPRequestHandler.java:152) at com.evermind[Oracle9iAS (9.0.2.2) Containers for J2EE].server.http.AJPRequestHandler.run(AJPRequestHandler.java:72) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:802) at java.lang.Thread.run(Thread.java:484)