IBM Support

IV99769: MISSING PACKAGE PRIVATE CLASS JAVA.LANG.ABSTRACTSTRINGBUILDER DURING VERIFICATION

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: The following error occurs when using the IBM SDK
    to run classes compiled by OpenJDK 7 (or later with -target 7):
    Exception in thread "main" java.lang.NoClassDefFoundError:
    java.lang.AbstractStringBuilder
    .
    Stack Trace: Exception in thread "main"
    java.lang.NoClassDefFoundError: java.lang.AbstractStringBuilder
            at java.lang.J9VMInternals.prepareClassImpl(Native
    Method)
            at
    java.lang.J9VMInternals.prepare(J9VMInternals.java:283)
            at java.lang.Class.getMethod(Class.java:1204)
            at
    sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:50
    7)
            at
    sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java
    :499)
    Caused by: java.lang.ClassNotFoundException:
    java.lang.AbstractStringBuilder
            at
    java.net.URLClassLoader.findClass(URLClassLoader.java:600)
            at
    java.lang.ClassLoader.loadClassHelper(ClassLoader.java:786)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:760)
            at
    sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:326)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:741)
            ... 5 more
    .
    

Local fix

  • There are three possible workarounds for this issue:
    - Compile with IBM SDK
    - Compile with -bootclasspath <JCL from IBM SDK>
    - Compile for Java 8+
    

Problem summary

  • The issue was caused by javac including the package-private
    class java.lang.AbstractStringBuilder in the stack map attribute
    used by the bytecode verifier. This happens when there can be
    either a java.lang.StringBuilder or a java.lang.StringBuffer on
    the stack, and javac resolves the ambiguity to the closest
    common supertype.
    

Problem conclusion

  • The package-private class java.lang.AbstractStringBuilder has
    been added.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR5       (8.0.5.0)
    .
    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

Comments

APAR Information

  • APAR number

    IV99769

  • Reported component name

    J9 COMMON CODE

  • Reported component ID

    620700127

  • Reported release

    270

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-09-11

  • Closed date

    2017-09-11

  • Last modified date

    2017-09-11

  • 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

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Document Information

Modified date:
22 February 2022