Hello, In the 3rd chapter of your Tutorial (http://www.biojava.org/tutorials/chap_iobasics.html) the class EmblProcessor is used. Does this class exist already? Do you know a working Parser for EMBL- and SWISSPROT-flatfiles? thanks, Julia Julia Boettcher Lehrstuhl fuer Datenbanken und Informationssysteme Institut fuer Informatik Humboldt-Universitaet, Berlin