IT45740: Using the com.ibm.mq.headers.MQMD.copyFrom() method and MQ classes for Java can result in a NullPointerException

APAR status

• Closed as program error.

Error description

• When a message has blank or invalid PutDate/PutTime field,
  MQMessage.putDateTime will be null value.  Then
  com.ibm.mq.headers.MQMD1.copyFrom is invoked with such a
  message, MQMD1.copyFrom() method throws NullPointerException.
  -----
  java.lang.NullPointerException
  	at com.ibm.mq.headers.MQMD1.copyFrom(MQMD1.java:1064)
  	at com.ibm.mq.headers.MQMD.copyFrom(MQMD.java:410)
  -----
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users of the MQ classes for Java.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  An MQ classes for Java application calling the method
  "com.ibm.mq.headers.MQMD.copyFrom()" can cause a
  NullPointerException to be thrown:
  
  java.lang.NullPointerException
   	at com.ibm.mq.headers.MQMD1.copyFrom(MQMD1.java:1064)
   	at com.ibm.mq.headers.MQMD.copyFrom(MQMD.java:410)
  
  This is due to the MQMD object passed in having a null value for
  the putDateTime.
  

Problem conclusion

• The "com.ibm.mq.headers.MQMD1.copyFrom()" method will no longer
  throw a NullPointerException.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.3 LTS   9.3.0.20
  v9.4 LTS   9.4.0.0
  
  The latest available maintenance can be obtained from
  'IBM MQ Recommended Fixes'
  https://www.ibm.com/support/pages/recommended-fixes-ibm-mq
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'IBM MQ
  Planned Maintenance Release Dates'
  https://ibm.biz/mqplannedmaintenance
  
  ---------------------------------------------------------------
  

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

  MQ BASE V9.3

• Fixed component ID

  5724H7291

Applicable component levels