occurences.add(pm.group(group));
}
} catch (FileNotFoundException e) {
log.error("file not found " +e.toString());
} catch (CharacterCodingException e) {
log.error("encoding problem " +e.toString());
} catch (IOException e) {
log.error("IO exception" +e.toString());
} finally {
// Close the channel and the stream
if (fc != null)