1. One or more computer readable media comprising computer executable instructions that, when executed, direct an integrated circuit card (ICC) to: receive a command to execute one or more code files and one or more data files to execute a runtime environment applet in the ICC, wherein a data file can be invoked with different code files to implement different runtime environment applets; access a file system to retrieve and load an identified code file and an identified data file; and execute the identified code file through completion to perform operations in the identified data file.