IV59520: NULLPOINTEREXCEPTION WHILE WRITING CLASS DESCRIPTOR OBJECT TO OBJECTOUTPUTSTREAM AFTER APLLYING APAR IV43437.

APAR status

• Closed as program error.

Error description

• Error Message: NullPointerException
  .
  Stack Trace: Exception in thread "main"
  java.lang.NullPointerExceptionat
  sun.reflect.misc.ReflectUtil.checkPackageAccess(ReflectUtil.java
  :107)at
  java.io.ObjectOutputStream.writeNonProxyDesc(ObjectOutputStream.
  java:1269)at
  java.io.ObjectOutputStream.writeClassDesc(ObjectOutputStream.jav
  a:1212)at
  java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:
  1104)at
  java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:3
  31)
  .
  

Local fix

Problem summary

• The class object in ObjectOutputStream can be null for custom
  ObjectOutputStream. The missing null check  for class object
  cause the NullPointerException. .
  

Problem conclusion

• The JDK has been updated to add the null check  for class object
   before accessing the class object of a ObjectOutputStream
  .
  This APAR will be fixed in the following Java Releases:
     6    SR16 FP1  (6.0.16.1)
     6 R1 SR8  FP1  (6.1.8.1)
     7    SR7  FP1  (7.0.7.1)
     7 R1 SR1  FP1  (7.1.1.1)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, Java maintenance is available
  from:
             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

     UP

• R700 PSY

     UP