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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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java.lang.NullPointerException: 	at java.util.Hashtable.put(Hashtable.java:595)	at com.anz.Recon.Detrecon.execute(Detrecon.java:74)	at com.thortech.xl.scheduler.tasks.SchedulerBaseTask.run(Unknown Source)	at com.thortech.xl.scheduler.core.quartz.QuartzWrapper$TaskExecutionAction.run(Unknown Source)	at java.security.AccessController.doPrivileged(AccessController.java:214)	at javax.security.auth.Subject.doAs(Subject.java:495)	at com.ibm.websphere.security.auth.WSSubject.doAs(WSSubject.java:118)	at Thor.API.Security.LoginHandler.websphereLoginSession.runAs(Unknown Source)	at com.thortech.xl.scheduler.core.quartz.QuartzWrapper.execute(Unknown Source)	at org.quartz.core.JobRunShell.run(JobRunShell.java:178)	at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:477)