I need to use Java to read, parse and process a fixed length text file.  The
data fields are fixed, such that field1 starts at 0 and is N bytes long,
field2 starts at 20 and is N bytes long, etc. etc.  Some fields are long and
will span multiple rows. There could even be breaks in the file where a few
lines are skipped.

What's the best way to approach this with Java?  Is there an I/O class that
works best for this, or better yet, is specifically designed to work with
fixed length text files?

Thanks in advance for any advice.

Julian