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  1. Commons Collections
  2. COLLECTIONS-734

Encountered an IllegalStateException while traversing with Flat3Map.entrySet()

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 3.0
    • Fix Version/s: 4.5
    • Component/s: Map
    • Labels:
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      Description

      Encountered an IllegalStateException while traversing with Flat3Map.entrySet()

      //代码示例
          public void testEntrySet() {
              final Flat3Map<Integer, String> map = new Flat3Map<>();
              map.put(1, "A");
              map.put(2, "B");
              map.put(3, "C");
              Iterator<Map.Entry<Integer, String>> it = map.entrySet().iterator();        Map.Entry<Integer, String> mapEntry1 = it.next();
              Map.Entry<Integer, String> mapEntry2 = it.next();
              Map.Entry<Integer, String> mapEntry3 = it.next();
              it.remove();        assertEquals(2, map.size());
          }
      

      Using the above code will generate an IllegalStateException.
      The reason for this problem is that there is a problem with the EntryIterator.remove() method in the Flat3Map java class.

      I submitted a PR(https://github.com/apache/commons-collections/pull/115) to fix this bug.

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              • Assignee:
                Unassigned
                Reporter:
                Guoping1 Chen
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