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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.

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via Oracle Community by 807573, 1 year ago
This exception has no message.
via Oracle Community by 807573, 1 year ago
This exception has no message.
via Google Groups by Andy Bowes, 7 months ago
via Oracle Community by Empi3, 1 year ago
via Apache Bugzilla by thomas.eliasson, 1 year ago
java.lang.NullPointerException: 	at java.util.Hashtable.put(Hashtable.java:375)	at com.iplanet.am.installer.panels.SummaryPanel.buildResponseFiles(SummaryPanel.java:613)	at com.iplanet.am.installer.panels.SummaryPanel.isDisplayComplete(SummaryPanel.java:490)	at com.sun.wizards.core.IteratorLayout.next(IteratorLayout.java:733)	at com.sun.wizards.core.WizardTreeManager.nextButtonPressed(WizardTreeManager.java:1198)	at com.sun.wizards.core.CommandLineConsole.run(CommandLineConsole.java:148)	at java.lang.Thread.run(Thread.java:479)