java.lang.ClassCastException: Animal cannot be cast to java.lang.Comparable

Coderanch | meeta gaur | 4 years ago
  1. 0

    TreeSet

    Coderanch | 4 years ago | meeta gaur
    java.lang.ClassCastException: Animal cannot be cast to java.lang.Comparable
  2. 0

    ObjectMapper.readValue fails for `TreeSet` for byte[] (and other types that are not `Comparable`)

    GitHub | 3 years ago | webbean
    java.lang.ClassCastException: [B cannot be cast to java.lang.Comparable
  3. 0

    ClassCastException when converting List> to TreeSet>

    Stack Overflow | 3 years ago | RyanS
    java.lang.ClassCastException: java.util.TreeMap cannot be cast to java.lang.Comparable
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  5. 0

    I can't iterate through TreeSet

    Stack Overflow | 3 years ago
    java.lang.ClassCastException: OrderedUsers$User cannot be cast to java.lang.Comparable
  6. 0

    Issue 74 - kryo - Deserialization fails on ConcurrentHashMap in Spring User object - Fast, efficient Java serialization and cloning - Google Project Hosting

    google.com | 1 year ago
    com.esotericsoftware.kryo.SerializationException: Unable to deserialize object of type: java.util.concurrent.ConcurrentHashMap

  1. aldrinleal 2 times, last 2 months ago
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Root Cause Analysis

  1. java.lang.ClassCastException

    Animal cannot be cast to java.lang.Comparable

    at java.util.TreeMap.compare()
  2. Java RT
    TreeSet.add
    1. java.util.TreeMap.compare(TreeMap.java:1188)
    2. java.util.TreeMap.put(TreeMap.java:531)
    3. java.util.TreeSet.add(TreeSet.java:255)
    3 frames
  3. Unknown
    MatualComparableTest.main
    1. MatualComparableTest.main(MatualComparableTest.java:15)
    1 frame