java.lang.NullPointerException

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    • java.lang.NullPointerException: No API environment is registered for this thread. at com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppId(DatastoreApiHelper.java:108) at com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppIdNamespace(DatastoreApiHelper.java:118) at com.google.appengine.api.datastore.Key.<init>(Key.java:104) at com.google.appengine.api.datastore.Key.<init>(Key.java:88) at com.google.appengine.api.datastore.Key.<init>(Key.java:84) at com.google.appengine.api.datastore.Entity.<init>(Entity.java:122) at com.google.appengine.api.datastore.Entity.<init>(Entity.java:103) at org.datanucleus.store.appengine.DatastoreFieldManager.<init>(DatastoreFieldManager.java:187) at org.datanucleus.store.appengine.DatastorePersistenceHandler.insertPreProcess(DatastorePersistenceHandler.java:338) at org.datanucleus.store.appengine.DatastorePersistenceHandler.insertObjects(DatastorePersistenceHandler.java:251) at org.datanucleus.store.appengine.DatastorePersistenceHandler.insertObject(DatastorePersistenceHandler.java:240) at org.datanucleus.state.JDOStateManagerImpl.internalMakePersistent(JDOStateManagerImpl.java:3185) at org.datanucleus.state.JDOStateManagerImpl.makePersistent(JDOStateManagerImpl.java:3161) at org.datanucleus.ObjectManagerImpl.persistObjectInternal(ObjectManagerImpl.java:1298) at org.datanucleus.ObjectManagerImpl.persistObject(ObjectManagerImpl.java:1175) at org.datanucleus.jdo.JDOPersistenceManager.jdoMakePersistent(JDOPersistenceManager.java:669) at org.datanucleus.jdo.JDOPersistenceManager.makePersistent(JDOPersistenceManager.java:694) at com.stuff.server.GreetingServiceImpl.saveContact(GreetingServiceImpl.java:25) at com.stuff.server.TestCase.testServerCallBack(TestCase.java:18) at com.stuff.server.TestCase.main(TestCase.java:13)

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