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  1. ,

    Exception in thread "main" java.io.NotSerializableException: java.util.Hashtable$Enumerator at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source) at java.io.ObjectOutputStream.writeSe

  2. ,
    via Stack Overflow by Matthias

    Your object contains member variables which are themselves not serializable 'ReportDataStoreRegion'. If you really want to serialize your object. One option would be to declare the variable as transient so that it is not serialized.

Solutions on the web

via GitHub by barbeau
, 2 years ago
com.fasterxml.jackson.databind.deser.std.StdKeyDeserializer$StringKD
java.io.NotSerializableException: com.fasterxml.jackson.databind.deser.std.StdKeyDeserializer$StringKD	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)	at java.util.concurrent.ConcurrentHashMap.writeObject(ConcurrentHashMap.java:1247)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)	at edu.usf.cutr.siri.SiriUtils.writeToCache(SiriUtils.java:416)	at edu.usf.cutr.siri.SiriUtils.access$0(SiriUtils.java:395)	at edu.usf.cutr.siri.SiriUtils$1.run(SiriUtils.java:381)