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

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Google Groups by Colin Wyllie, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at org.jdesktop.wonderland.modules.sas.server.SasServer.persistProviderApps(SasServer.java:378)
at org.jdesktop.wonderland.modules.sas.server.SasServer.providerDisconnected(SasServer.java:171)
at org.jdesktop.wonderland.modules.sas.server.SasProviderConnectionHandler.clientDisconnected(SasProviderConnectionHandler.java:163)
at org.jdesktop.wonderland.server.comms.WonderlandSessionListener$NotifyDisconnectTask.run(WonderlandSessionListener.java:1241)
at org.jdesktop.wonderland.server.UserManager$LogoutTask.run(UserManager.java:411)
at com.sun.sgs.impl.service.task.PendingTask.run(PendingTask.java:228)
at com.sun.sgs.impl.service.task.TaskServiceImpl$TaskRunner.run(TaskServiceImpl.java:1128)
at com.sun.sgs.impl.kernel.TransactionSchedulerImpl.executeTask(TransactionSchedulerImpl.java:619)
at com.sun.sgs.impl.kernel.TransactionSchedulerImpl.access$500(TransactionSchedulerImpl.java:91)
at com.sun.sgs.impl.kernel.TransactionSchedulerImpl$TaskConsumer.run(TransactionSchedulerImpl.java:523)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

Users with the same issue

You are the first who have seen this exception.

Write tip

Know the solutions? Share your knowledge to help other developers to debug faster.