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via Stack Overflow by Java Beginner
, 1 year ago
This exception has no message.
via knowcoding.com by Unknown author, 2 years ago
java.lang.NullPointerException: 	at Panel.paintComponent(Panel.java:71)	at javax.swing.JComponent.paint(Unknown Source)	at javax.swing.JComponent.paintChildren(Unknown Source)	at javax.swing.JComponent.paint(Unknown Source)	at javax.swing.JComponent.paintChildren(Unknown Source)	at javax.swing.JComponent.paint(Unknown Source)	at javax.swing.JLayeredPane.paint(Unknown Source)	at javax.swing.JComponent.paintChildren(Unknown Source)	at javax.swing.JComponent.paintToOffscreen(Unknown Source)	at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)	at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)	at javax.swing.RepaintManager.paint(Unknown Source)	at javax.swing.JComponent.paint(Unknown Source)	at java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)	at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)	at sun.awt.SunGraphicsCallback.runComponents(Unknown Source)	at java.awt.Container.paint(Unknown Source)	at java.awt.Window.paint(Unknown Source)	at javax.swing.RepaintManager$4.run(Unknown Source)	at javax.swing.RepaintManager$4.run(Unknown Source)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)	at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)	at javax.swing.RepaintManager.access$1200(Unknown Source)	at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)	at java.awt.event.InvocationEvent.dispatch(Unknown Source)	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)	at java.awt.EventQueue.access$500(Unknown Source)	at java.awt.EventQueue$3.run(Unknown Source)	at java.awt.EventQueue$3.run(Unknown Source)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)	at java.awt.EventQueue.dispatchEvent(Unknown Source)	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.run(Unknown Source)