IV20281: JAVA 6 XMLENCODER EXCEPTION

APAR status

• Closed as program error.

Error description

• Error Message: java.lang.Exception: failed to write expression:
  HashSet=Class.new();
  .
  Stack Trace: java.lang.Exception: failed to write expression:
  HashSet=Class.new();
          at java.beans.Encoder.writeExpression(Encoder.java:367)
          at
  java.beans.XMLEncoder.writeExpression(XMLEncoder.java:956)
          at
  java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.j
  ava:117)
          at java.beans.Encoder.writeObject(Encoder.java:386)
          at
  java.beans.XMLEncoder.writeObject(XMLEncoder.java:974)
          at java.beans.Encoder.writeExpression(Encoder.java:365)
          at
  java.beans.XMLEncoder.writeExpression(XMLEncoder.java:956)
          at
  java.beans.UtilMapPersistenceDelegate.initialize(UtilMapPersiste
  nceDeleg
  ate.java:43)
          at
  java.beans.PersistenceDelegate.initialize(PersistenceDelegate.ja
  va:60)
          at
  java.beans.DefaultPersistenceDelegate.initialize(DefaultPersiste
  nceDeleg
  ate.java:103)
          at
  java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.j
  ava:114)
          at java.beans.Encoder.writeObject(Encoder.java:386)
          at
  java.beans.XMLEncoder.writeObject(XMLEncoder.java:974)
          at java.beans.Encoder.writeExpression(Encoder.java:365)
          at
  java.beans.XMLEncoder.writeExpression(XMLEncoder.java:956)
          at
  java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.j
  ava:117)
          at java.beans.Encoder.writeObject(Encoder.java:386)
          at
  java.beans.XMLEncoder.writeObject(XMLEncoder.java:974)
          at XMLEncoderTest.main(XMLEncoderTest.java:18)
  Caused by: java.util.ConcurrentModificationException
          at
  java.util.HashMap$AbstractMapIterator.checkConcurrentMod(HashMap
  .java:12
  2)
          at
  java.util.HashMap$AbstractMapIterator.makeNext(HashMap.java:127)
          at java.util.HashMap$KeyIterator.next(HashMap.java:200)
          at
  java.beans.UtilCollectionPersistenceDelegate.initialize(UtilColl
  ectionPe
  rsistenceDelegate.java:37)
          at
  java.beans.PersistenceDelegate.initialize(PersistenceDelegate.ja
  va:60)
          at
  java.beans.DefaultPersistenceDelegate.initialize(DefaultPersiste
  nceDeleg
  ate.java:103)
          at
  java.beans.PersistenceDelegate.initialize(PersistenceDelegate.ja
  va:60)
          at
  java.beans.DefaultPersistenceDelegate.initialize(DefaultPersiste
  nceDeleg
  ate.java:103)
          at
  java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.j
  ava:114)
          at java.beans.Encoder.writeObject(Encoder.java:386)
          at
  java.beans.XMLEncoder.writeObject(XMLEncoder.java:974)
          at java.beans.Encoder.writeExpression(Encoder.java:365)
          ... 18 more
  .
  

Local fix

Problem summary

• The problem is caused when
  java.beans.UtilCollectionPersistenceDelegate.initialize use
  iterator.next to a collection and the collection is modified at
  the same time.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR11
  6.0.1 SR4
  .
  UtilCollectionPersistenceDelegate has been updated to prevent
  the java.util.ConcurrentModificationException
  

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

     UP