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via Coderanch by Tarfa man, 1 year ago
This exception has no message.
via Stack Overflow by Maria Elena Boschi
, 2 years ago
java.lang.NullPointerException: 	at javax.swing.AbstractButton.isSelected(	at javax.swing.ButtonGroup.add(	at lightofproject.gui.DiagnoseSystemV_1.initComponents(	at lightofproject.gui.DiagnoseSystemV_1.(	at lightofproject.gui.DiagnoseSystemV_1$	at java.awt.event.InvocationEvent.dispatch(	at java.awt.EventQueue.dispatchEvent(	at java.awt.EventDispatchThread.pumpOneEventForFilters(	at java.awt.EventDispatchThread.pumpEventsForFilter(	at java.awt.EventDispatchThread.pumpEventsForHierarchy(	at java.awt.EventDispatchThread.pumpEvents(	at java.awt.EventDispatchThread.pumpEvents(	at