APAR status
Closed as program error.
Error description
Error Message: Customer code is using private Map map = new ConcurrentHashMap(); ArrayList ar = new ArrayList(map.keySet()); Newly created ArrayList is seen to have null entries, while it was iteratored. . Stack Trace: N/A .
Local fix
N/A
Problem summary
With ArrayList.toArray(T[] a) method, if the collection list fits in the specified array, it is returned therein. Otherwise, a new array is allocated with the runtime type of the specified array and the size of collection list. The problem occurs with existing code whenever new allocation of array object happens with ArrayList toArray(T[] a) method. As returned new array object reference is not set back with ArrayList constructor it will never being taken care. In this case as the passed elementData (ArrayList store data with this variable) will not initialized and thus have null entries.
Problem conclusion
This defect will be fixed in: 5.0.0 SR13 JVM is being modifed to set ArrayList constructor with return value of Collection.toArray(T[] a) method. So that it would reference a new array object being instantiated in between.
Temporary fix
Comments
APAR Information
APAR number
IV04519
Reported component name
JAVA 5 CLASS LI
Reported component ID
620500130
Reported release
500
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-08-08
Closed date
2011-10-09
Last modified date
2011-10-09
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 5 CLASS LI
Fixed component ID
620500130
Applicable component levels
R500 PSY
UP
[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCVQ3Y","label":"Java Class Libraries"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.0","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
09 October 2011