Hi, I am calling the 'JasperFillManager.fillReport' from my java class. After this i am geting the error as belw: This is the details in the log file: 2009-03-16 13:15:57,285 INFO [GenerateReport] [fillReportWithDataSource] jasper template path = /sns/datafiles/trade/ipapcs/report_templates/PCSPortMessages.jasper 2009-03-16 13:15:57,316 INFO [GenerateReport] [fillReportWithDataSource] jasper file loaded OK ... 2009-03-16 13:15:57,323 ERROR [GenerateReport] [fillReportWithDataSource] Caught Throwable: Error while generating the report=java.lang.NoClassDefFoundError Weblogic Console Log: java.lang.NoClassDefFoundError at net.sf.jasperreports.engine.fill.JRFiller.createFiller(JRFiller.java:147) at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:83) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:601) at com.crimsonlogic.trade.ipapcs.reports.util.GenerateReport.fillReportWithDataSource(GenerateReport.java:176) at com.crimsonlogic.trade.ipapcs.reports.action.PCSPortMessagesGenerateAction.execute(PCSPortMessagesGenerateAction.java:120) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1072) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27) at com.crimsonlogic.cps.filter.PortalRedirectFilter.doFilter(PortalRedirectFilter.java:90) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6987) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3892) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2766) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183) After excecute the SERVLET