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

Coderanch | Patrio Jensen | 7 years ago
  1. 0

    Need help

    Coderanch | 7 years ago | Patrio Jensen
    java.lang.ClassCastException: SingletonCheck cannot be cast to java.lang.Comparable
  2. 0

    GitHub comment 1147#257371921

    GitHub | 1 month ago | dizzzz
    java.lang.ClassCastException: org.exist.yajsw.Main cannot be cast to java.lang.Comparable
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    Stack Overflow | 6 years ago | Pez Cuckow
    java.lang.ClassCastException: Student cannot be cast to java.lang.Comparable
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    Median filter of a pgm image

    Stack Overflow | 3 years ago | user2930215
    java.lang.ClassCastException: [I cannot be cast to java.lang.Comparable
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    Why does Set.contains() not seem to be using o.equals()?

    Stack Overflow | 4 years ago | fophillips
    java.lang.ClassCastException: org.gridqtl.Marker cannot be cast to java.lang.Comparable

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    Root Cause Analysis

    1. java.lang.ClassCastException

      SingletonCheck cannot be cast to java.lang.Comparable

      at java.util.concurrent.ConcurrentSkipListMap.comparable()
    2. Java RT
      ConcurrentSkipListSet.add
      1. java.util.concurrent.ConcurrentSkipListMap.comparable(ConcurrentSkipListMap.java:621)
      2. java.util.concurrent.ConcurrentSkipListMap.doPut(ConcurrentSkipListMap.java:862)
      3. java.util.concurrent.ConcurrentSkipListMap.putIfAbsent(ConcurrentSkipListMap.java:1893)
      4. java.util.concurrent.ConcurrentSkipListSet.add(ConcurrentSkipListSet.java:202)
      4 frames
    3. test3
      ThreadRunner.run
      1. test3.ThreadRunner.run(ThreadRunner.java:15)
      1 frame
    4. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:619)
      1 frame