Cita: at Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.sun.java.swing.plaf.nimbus.DerivedColor$UIReso urce cannot be cast to com.sun.java.swing.Painter
at com.sun.java.swing.plaf.nimbus.NimbusStyle.getBack groundPainter(NimbusStyle.java:829)
at com.sun.java.swing.plaf.nimbus.SynthPainterImpl.pa intBackground(SynthPainterImpl.java:85)
at com.sun.java.swing.plaf.nimbus.SynthPainterImpl.pa intLabelBackground(SynthPainterImpl.java:739)
at javax.swing.plaf.synth.SynthLabelUI.update(SynthLa belUI.java:143)
at javax.swing.JComponent.paintComponent(JComponent.j ava:752)
at javax.swing.JComponent.paint(JComponent.java:1029)
at javax.swing.CellRendererPane.paintComponent(CellRe ndererPane.java:134)
at javax.swing.plaf.synth.SynthTableUI.paintCell(Synt hTableUI.java:633)
at javax.swing.plaf.synth.SynthTableUI.paintCells(Syn thTableUI.java:521)
at javax.swing.plaf.synth.SynthTableUI.paint(SynthTab leUI.java:305)
at javax.swing.plaf.synth.SynthTableUI.update(SynthTa bleUI.java:234)
at javax.swing.JComponent.paintComponent(JComponent.j ava:752)
at javax.swing.JComponent.paint(JComponent.java:1029)
at javax.swing.JComponent.paintToOffscreen(JComponent .java:5124)
at javax.swing.RepaintManager$PaintManager.paintDoubl eBuffered(RepaintManager.java:1479)
at javax.swing.RepaintManager$PaintManager.paint(Repa intManager.java:1410)
at javax.swing.RepaintManager.paint(RepaintManager.ja va:1224)
at javax.swing.JComponent._paintImmediately(JComponen t.java:5072)
at javax.swing.JComponent.paintImmediately(JComponent .java:4882)
at javax.swing.RepaintManager.paintDirtyRegions(Repai ntManager.java:785)
at javax.swing.RepaintManager.paintDirtyRegions(Repai ntManager.java:713)
at javax.swing.RepaintManager.seqPaintDirtyRegions(Re paintManager.java:693)
at javax.swing.SystemEventQueueUtilities$ComponentWor kRequest.run(SystemEventQueueUtilities.java:125)
at java.awt.event.InvocationEvent.dispatch(Invocation Event.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java: 597)
at java.awt.EventDispatchThread.pumpOneEventForFilter s(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(E ventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarch y(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThre ad.java:122)
ninguna de esas lineas las puedo modificar