IZ65534: 'JAVA.LANG.CLASSFORMATERROR' ERROR FOR A VALID IDENTIFIER.

APAR status

• Closed as program error.

Error description

• Error Message: The java class could not be loaded.
  java.lang.ClassFormatError: (Field) field name is invalid at
  offset=0.
  .
  Stack Trace: N/A
  .
  N/A
  

Local fix

• N/A
  

Problem summary

• Error 'java.lang.ClassFormatError' is thrown by the JVM for a
  valid identifier during class verification. Validation of the
  identifier is done using Character.isJavaIdentifierPart(ch).This
  API returns true for the identifier which adheres to the JVM
  specification for naming convention of the class,methods or
  fields. However an error in the class verifier results in the
  above exception being thrown.
  

Problem conclusion

• This defect will be fixed in:
  5.0.0 SR12
  .
  The JVM class verifier code has been fixed to correctly classify
  the characters in identifiers according to whether they are
  valid in class names, method names, or fields.
  .
  To obtain the fix:
  Install build 20091117 or later
  

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 5 J9 COMMO

• Fixed component ID

  620500127

Applicable component levels

• R500 PSN

     UP