How to insert and export strings

Hi I would like to run an rapidminerprocess which does basic text normalization (tokenizing etc.) . Is it possible to run my Process created in Rapidminer.gui with my string from my java programm and can i return the normalized string into my java programm after the process is finished. I know that it is possible to read and write files with rapidminer and than to read those in java, but this is not a secure and safe way.

Thank you very much for you help i hope you understand my problem .