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 kedar031
, 1 year ago
java.lang.NullPointerException
java.lang.NullPointerException: null	at java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1124)	at org.ehcache.impl.serialization.CompactJavaSerializer$OIS.readClassDescriptor(CompactJavaSerializer.java:239)	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1601)	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)	at org.ehcache.impl.serialization.CompactJavaSerializer.read(CompactJavaSerializer.java:131)	at org.ehcache.impl.internal.store.offheap.LazyOffHeapValueHolder.forceDeserialization(LazyOffHeapValueHolder.java:99)	at org.ehcache.impl.internal.store.offheap.LazyOffHeapValueHolder.value(LazyOffHeapValueHolder.java:53)	at org.ehcache.impl.internal.store.heap.OnHeapStore.cloneValueHolder(OnHeapStore.java:1455)	at org.ehcache.impl.internal.store.heap.OnHeapStore.importValueFromLowerTier(OnHeapStore.java:1445)	at org.ehcache.impl.internal.store.heap.OnHeapStore.getOrComputeIfAbsent(OnHeapStore.java:703)	at org.ehcache.impl.internal.store.tiering.TieredStore.get(TieredStore.java:110)	at org.ehcache.core.Ehcache.get(Ehcache.java:167)	at org.ehcache.core.PersistentUserManagedEhcache.get(PersistentUserManagedEhcache.java:148)	at com.terracotta.qa.ehcache.validation.ValidatingGetOperation.exec(ValidatingGetOperation.java:57)	at io.rainfall.ScenarioRun.initStatistics(ScenarioRun.java:284)	at io.rainfall.ScenarioRun.start(ScenarioRun.java:135)	at com.terracotta.qa.ehcache.tiering.test.UserManagedPersistenceCacheTest$2.call(UserManagedPersistenceCacheTest.java:172)	at java.util.concurrent.FutureTask.run(FutureTask.java:262)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:745)