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 GitHub by damithc
, 1 year ago
This exception has no message.
via Google Groups by dantuluri, 2 years ago
via Google Groups by Frusty, 2 years ago
via Google Groups by Draško, 2 years ago
java.lang.NullPointerException:
at com.google.storage.onestore.v3.OnestoreEntity$PropertyValue.setStringValue(OnestoreEntity.java:3411)
at com.google.appengine.api.datastore.DataTypeTranslator$BaseStringType.toV3Value(DataTypeTranslator.java:751)
at com.google.appengine.api.datastore.DataTypeTranslator$TextType.toV3Value(DataTypeTranslator.java:1575)
at com.google.appengine.api.datastore.DataTypeTranslator.addPropertyToPb(DataTypeTranslator.java:215)
at com.google.appengine.api.datastore.DataTypeTranslator.addPropertiesToPb(DataTypeTranslator.java:162)
at com.google.appengine.api.datastore.EntityTranslator.convertToPb(EntityTranslator.java:62)
at com.google.appengine.api.datastore.AsyncDatastoreServiceImpl$4.toPb(AsyncDatastoreServiceImpl.java:178)
at com.google.appengine.api.datastore.AsyncDatastoreServiceImpl$4.toPb(AsyncDatastoreServiceImpl.java:155)
at com.google.appengine.api.datastore.Batcher$BatchIterator.(Batcher.java:180)
at com.google.appengine.api.datastore.Batcher$2.(Batcher.java:317)
at com.google.appengine.api.datastore.Batcher.getBatches(Batcher.java:317)
at com.google.appengine.api.datastore.AsyncDatastoreServiceImpl.doBatchPut(AsyncDatastoreServiceImpl.java:365)
at com.google.appengine.api.datastore.BaseAsyncDatastoreServiceImpl.put(BaseAsyncDatastoreServiceImpl.java:293)
at com.google.appengine.api.datastore.BaseAsyncDatastoreServiceImpl$4.runInternal(BaseAsyncDatastoreServiceImpl.java:261)
at com.google.appengine.api.datastore.TransactionRunner.runWriteInTransaction(TransactionRunner.java:53)
at com.google.appengine.api.datastore.BaseAsyncDatastoreServiceImpl.put(BaseAsyncDatastoreServiceImpl.java:263)
at com.google.appengine.api.datastore.BaseAsyncDatastoreServiceImpl.put(BaseAsyncDatastoreServiceImpl.java:234)
at org.datanucleus.store.appengine.RuntimeExceptionWrappingDatastoreService.put(RuntimeExceptionWrappingDatastoreService.java:96)
at org.datanucleus.store.appengine.DatastorePersistenceHandler.put(DatastorePersistenceHandler.java:196)
at org.datanucleus.store.appengine.DatastorePersistenceHandler.put(DatastorePersistenceHandler.java:149)
at org.datanucleus.store.appengine.DatastorePersistenceHandler.put(DatastorePersistenceHandler.java:144)
at org.datanucleus.store.appengine.DatastorePersistenceHandler.updateObject(DatastorePersistenceHandler.java:575)
at org.datanucleus.state.JDOStateManagerImpl.flush(JDOStateManagerImpl.java:4576)
at org.datanucleus.ObjectManagerImpl.flushInternal(ObjectManagerImpl.java:2814)
at org.datanucleus.ObjectManagerImpl.flush(ObjectManagerImpl.java:2754)
at org.datanucleus.ObjectManagerImpl.preCommit(ObjectManagerImpl.java:2893)
at org.datanucleus.TransactionImpl.internalPreCommit(TransactionImpl.java:369)
at org.datanucleus.TransactionImpl.commit(TransactionImpl.java:256)
at org.datanucleus.ObjectManagerImpl.close(ObjectManagerImpl.java:801)
at org.datanucleus.jdo.JDOPersistenceManager.close(JDOPersistenceManager.java:271)
at teammates.storage.api.FeedbackQuestionsDb.updateFeedbackQuestion(FeedbackQuestionsDb.java:206)
at teammates.storage.api.FeedbackQuestionsDb.updateFeedbackQuestion(FeedbackQuestionsDb.java:160)
at teammates.logic.core.FeedbackQuestionsLogic.updateFeedbackQuestion(FeedbackQuestionsLogic.java:610)
at teammates.logic.core.FeedbackQuestionsLogic.updateFeedbackQuestion(FeedbackQuestionsLogic.java:586)
at teammates.logic.core.FeedbackQuestionsLogic.updateFeedbackQuestionNumber(FeedbackQuestionsLogic.java:515)
at teammates.logic.api.Logic.updateFeedbackQuestionNumber(Logic.java:1734)
at teammates.ui.controller.InstructorFeedbackQuestionEditAction.editQuestion(InstructorFeedbackQuestionEditAction.java:96)
at teammates.ui.controller.InstructorFeedbackQuestionEditAction.execute(InstructorFeedbackQuestionEditAction.java:52)
at teammates.ui.controller.Action.executeAndPostProcess(Action.java:344)
at teammates.ui.controller.ControllerServlet.doPost(ControllerServlet.java:64)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at teammates.storage.datastore.DatastoreFilter.doFilter(DatastoreFilter.java:29)
at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:37)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:260)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:78)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:148)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:446)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:453)
at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:276)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:312)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:304)
at java.lang.Thread.run(Thread.java:745)

Users with the same issue

You are the first who have seen this exception. Write a tip to help other users and build your expert profile.

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