IV88715: NULLPOINTEREXCEPTION THROWN DURING METHODTYPE COMPONENT INITIALI ZATION

APAR status

• Closed as program error.

Error description

• Error Message: NullPointerException is thrown when Java code
  attempts to initialize a MethodType component in the presence of
  uninitialized classes.
  .
  Stack Trace: ...
      at java.lang.Class.forNameImpl(Native Method)
      at java.lang.Class.forName(Class.java)
      at
  java.lang.invoke.MethodType.nonPrimitiveClassFromString(MethodTy
  pe.java)
      at
  java.lang.invoke.MethodType.parseIntoClasses(MethodType.java)
      at
  java.lang.invoke.MethodType.fromMethodDescriptorString(MethodTyp
  e.java)
      at
  java.lang.invoke.MethodHandle.sendResolveMethodHandle(MethodHand
  le.java)
      at java.lang.invoke.MethodHandle.getCPMethodHandleAt(Native
  Method)
      at
  java.lang.invoke.MethodHandle.resolveInvokeDynamic(MethodHandle.
  java)
      ....
  .
  N/A
  

Local fix

• N/A
  

Problem summary

• NullPointerException is thrown when Java code attempts to
  initialize a MethodType component in the presence of
  uninitialized classes.
  

Problem conclusion

• According to the Java API for MethodType, all classes named in
  the descriptor must be accessible and will be loaded when the
  JVM materializes a MethodType from a descriptor String. But, the
  classes need not be initialized. Thus, the JVM has been updated
  to allow MethodType component initialization in the absence of
  initialized classes.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR3 FP12  (8.0.3.12)
  .
  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

• N/A
  

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

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R270 PSY

     UP