java.lang.NullPointerException: This exception has no message.

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via Oracle Community by 807587, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at undefined.UtilityMethods$1.getColumnClass(UtilityMethods.java:321)
at javax.swing.JTable.getColumnClass(JTable.java:1695)
at javax.swing.JTable.getCellRenderer(JTable.java:3512)
at javax.swing.plaf.basic.BasicTableUI.paintCell(BasicTableUI.java:994)
at javax.swing.plaf.basic.BasicTableUI.paintCells(BasicTableUI.java:917)
at javax.swing.plaf.basic.BasicTableUI.paint(BasicTableUI.java:858)
at javax.swing.plaf.ComponentUI.update(ComponentUI.java:39)
at javax.swing.JComponent.paintComponent(JComponent.java:395)
at javax.swing.JComponent.paint(JComponent.java:687)
at javax.swing.JComponent.paintChildren(JComponent.java:498)
at javax.swing.JComponent.paint(JComponent.java:696)
at javax.swing.JViewport.paint(JViewport.java:668)
at javax.swing.JComponent.paintChildren(JComponent.java:498)
at javax.swing.JComponent.paint(JComponent.java:696)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:23)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:54)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:91)
at java.awt.Container.paint(Container.java:960)
at javax.swing.JComponent.paintChildren(JComponent.java:510)
at javax.swing.JComponent.paint(JComponent.java:696)
at javax.swing.JComponent.paintChildren(JComponent.java:498)
at javax.swing.JComponent.paint(JComponent.java:696)
at javax.swing.JComponent.paintChildren(JComponent.java:498)
at javax.swing.JComponent.paint(JComponent.java:696)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:546)
at javax.swing.JComponent.paintChildren(JComponent.java:498)
at javax.swing.JComponent.paint(JComponent.java:669)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:23)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:54)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:91)
at java.awt.Container.paint(Container.java:960)
at javax.swing.JFrame.update(JFrame.java:329)
at sun.awt.RepaintArea.update(RepaintArea.java:337)
at sun.awt.windows.WComponentPeer.handleEvent(WComponentPeer.java:200)
at java.awt.Component.dispatchEventImpl(Component.java:2663)
at java.awt.Container.dispatchEventImpl(Container.java:1213)
at java.awt.Window.dispatchEventImpl(Window.java:914)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)

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