Grave: java.awt.HeadlessException
Grave: at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:197)
Grave: at java.awt.Window.<init>(Window.java:534)
Grave: at java.awt.Frame.<init>(Frame.java:420)
Grave: at java.awt.Frame.<init>(Frame.java:385)
Grave: at javax.swing.JFrame.<init>(JFrame.java:180)
Grave: at net.sf.jasperreports.view.JasperViewer.<init>(JasperViewer.java:176)
Grave:atnet.sf.jasperreports.view.JasperViewer.viewReport(JasperViewer.java:455)
Grave:atnet.sf.jasperreports.view.JasperViewer.viewReport(JasperViewer.java:368)
Grave:at web.ClientMBean.impression(ClientMBean.java:139)
Grave: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Grave:atsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
Grave:atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
Grave: at java.lang.reflect.Method.invoke(Method.java:601)
Grave: at com.sun.el.parser.AstValue.invoke(AstValue.java:234)
Grave:atcom.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)
Grave:atjavax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
Grave:atcom.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
Grave:atjavax.faces.component.UICommand.broadcast(UICommand.java:315)
Grave:atjavax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
Grave:atjavax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
Grave:atcom.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
Grave: at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
Grave:atcom.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
Grave:at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
Grave:atorg.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
Grave:atorg.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
Grave:atorg.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
Grave:atorg.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
Grave:atorg.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
Grave:at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
Grave:atcom.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
Grave:atorg.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
Grave:atorg.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
Grave:atorg.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
Grave:atcom.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
Grave:atcom.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
Grave:atcom.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
Grave:atcom.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019
Grave:atcom.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225).....
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