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

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via Oracle Community by 843797, 1 year ago
java.lang.NullPointerException:
at java.util.Hashtable.access$100(Hashtable.java:90)
at java.util.Hashtable$EntrySet.iterator(Hashtable.java:592)
at java.util.Collections$SynchronizedCollection.iterator(Collections.java:1096)
at java.util.Hashtable.hashCode(Hashtable.java:728)
at java.util.Hashtable.get(Hashtable.java:315)
at mypackage.serializer.XMLSerializer.buildXML(XMLSerializer.java:205)
at mypackage.serializer.XMLSerializer.buildXML(XMLSerializer.java:178)
at mypackage.serializer.XMLSerializer.main(XMLSerializer.java:66)

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