JVMTI error 79JVMTI_ERROR_UNMODIFIABLE_CLASS

JVMTI error code 79 (JVMTI_ERROR_UNMODIFIABLE_CLASS) indicates that the requested modification to a class is not allowed because the class is unmodifiable. This error can occur when trying to redefine or retransform a class that has already been loaded and initialized, or when attempting to modify a system class or a class that is part of the Java runtime environment.

In general, this error occurs when the Java Virtual Machine Tool Interface (JVMTI) is unable to perform the requested operation due to restrictions imposed by the Java runtime environment. To avoid this error, it is important to ensure that the class being modified is not already initialized, and to avoid attempting to modify system classes or classes that are part of the Java runtime environment.

If you are encountering this error while working with a specific Java application or tool, you may need to consult the documentation or support resources for that application or tool to determine how to proceed. In some cases, it may be possible to modify the application or tool to avoid triggering this error.