In JLS section 4.1 ("The ClassFile structure") for SE 11, it states:super_class For a class, the value of the super_class item either must be zero or must be a valid index into the constant_pool table. If the value of the super_class item is nonzero, the constant_pool entry at that index must be a CONSTANT_Class_info structure representing the direct superclass of the class defined by this class file. Neither the direct superclass nor any of its superclasses may have the ACC_FINAL flag set in the access_flags item of its ClassFile structure. If the value of the super_class item is zero, then this class file must represent the class Object, the only class or interface without a direct superclass. This is incorrect -- the value of super_class is also zero for module-info.class files.
