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

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via Eclipse Bugzilla by minfrin, 1 year ago
This exception has no message.
via Oracle Community by 843802, 1 year ago
via Oracle Community by 994091, 1 year ago
This exception has no message.
via Google Groups by Jeremy Custenborder, 5 months ago
via Oracle Community by 807573, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at java.util.Hashtable.put(Hashtable.java:391)
at undefined.ConnectDB.getActiveMember(ConnectDB.java:55)
at undefined.MultiConferenceGUI.setActiveMember(MultiConferenceGUI.java:378)
at undefined.MultiConferenceGUI.(MultiConferenceGUI.java:99)
at undefined.StartConferenceStudGUI.actionPerformed(StartConferenceStudGUI.java:263)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1767)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1820)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:419)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:258)
at java.awt.Component.processMouseEvent(Component.java:5021)
at java.awt.Component.processEvent(Component.java:4818)
at java.awt.Container.processEvent(Container.java:1380)
at java.awt.Component.dispatchEventImpl(Component.java:3526)
at java.awt.Container.dispatchEventImpl(Container.java:1437)
at java.awt.Component.dispatchEvent(Component.java:3367)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3214)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2929)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2859)
at java.awt.Container.dispatchEventImpl(Container.java:1423)
at java.awt.Window.dispatchEventImpl(Window.java:1566)
at java.awt.Component.dispatchEvent(Component.java:3367)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:445)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:144)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:130)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:98)

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