com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.NullPointerException) (through reference chain: com.framework.entity.dynamic.DocumentEntityInfo["folders"]->java.util.TreeSet[0])

GitHub | reinaldo-besen | 5 months ago
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  1. 0

    NPE with `CollectionDeserializer` with `TreeSet` class, with input `null`

    GitHub | 5 months ago | reinaldo-besen
    com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.NullPointerException) (through reference chain: com.framework.entity.dynamic.DocumentEntityInfo["folders"]->java.util.TreeSet[0])
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    GATK | GATK | Tagged #code-exception

    broadinstitute.org | 11 months ago
    java.lang.NullPointerException
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    GWT strange serialization exception

    Stack Overflow | 5 years ago | user1362565
    java.lang.NullPointerException

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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.util.TreeMap.compare()
  2. Java RT
    TreeSet.add
    1. java.util.TreeMap.compare(TreeMap.java:1290)
    2. java.util.TreeMap.put(TreeMap.java:538)
    3. java.util.TreeSet.add(TreeSet.java:255)
    3 frames
  3. Jackson
    CollectionDeserializer.deserialize
    1. com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:284)
    1 frame