Computer-implemented methods, computer program products and data processing systems for transmitting a target code module to a server that is executing a computer program capable of using the target code module, and for obtaining the target code module at the server. The target code module is encapsulated in a base language code module, and the base language code module is transmitted to the server. The server receives the base language code module having the target code module encapsulated therein, and extracts the target code module from the base language code module.