1. A method of operating a data processing system, the data processing system comprising a file system, a messaging system and a monitoring component, the method comprising: monitoring the file system, detecting a change in the file system, and amending a structure of the messaging system, in response to the detected change in the file system, wherein the detected change in the file system comprises at least one of: creation or deletion of a directory; and the amending of the structure of the messaging system comprises at least one of: a corresponding creation or deletion of at least one of: a queue manager, queue, topic or other object in the messaging system, and a type of the object created in the messaging system is determined in accordance with a relative position in a hierarchy of the file system of the detected created directory.