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    Thrown when an application is trying to use or access an object whose reference equals to null. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

Solutions on the web

via Jive Software Open Source by Derek DeMoro, 1 year ago
This exception has no message.
via JIRA by Derek DeMoro, 1 year ago
This exception has no message.
via Jive Software Open Source by Derek DeMoro, 1 year ago
This exception has no message.
via http://www.openoffice.org/issues/ by gilh, 1 year ago
via Stack Overflow by Gyowanny Pessatto Queiroz
, 2 years ago
This exception has no message.
via liferay.com by Unknown author, 2 years ago
java.lang.NullPointerException: 	at java.util.Hashtable.put(Hashtable.java:396)	at java.util.Properties.setProperty(Properties.java:128)	at java.lang.System.setProperty(System.java:700)	at org.jivesoftware.LoginDialog.updateProxyConfig(LoginDialog.java:766)	at org.jivesoftware.LoginDialog.invoke(LoginDialog.java:128)	at org.jivesoftware.Spark.(Spark.java:53)	at org.jivesoftware.Spark.(Spark.java:37)	at org.jivesoftware.Spark$1.run(Spark.java:121)	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)