IV81204: ON JAVA6, THE API JAVA.UTIL.TREEMAP.SUBMAP() RETURNS INCORRECT VALUES IN SPECIFIC CASES.

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: N/A
  .
  

Local fix

Problem summary

• If no. of elements in treemap is (n*64) +1 , then accessing
  subMap with startKey as greater than last but one element and
  endKey as last element, then the expected output is an empty
  treemap whereas the current implementation returns the last
  element.
  For example:
  Treemap with 65 elements: {1=1, 4=4, 9=9, .., 256=256, 259=259}
  TreeMap.subMap(258, 259)
  Expected Output: {}
  Actual Output: {259=259}
  This is specific to Java 6 and 6.1
  

Problem conclusion

• The JDK has been updated to exclude the endKey from the result
  of java.util.TreeMap.subMap()
  .
  This APAR will be fixed in the following Java Releases:
     6    SR16 FP25 (6.0.16.25)
     6 R1 SR8 FP25  (6.1.8.25)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
             https://www.ibm.com/developerworks/java/jdk/
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels

• R600 PSY

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