Framework for flat/XML data transformations. Supported transformations : flat-XML, XML-flat, flat-flat, and XML-XML http://servingxml.sourceforge.net/
Super CSV
This CSV reader/writer makes it easy to read/write
objects/maps/string lists with automatic type conversion and constraint checking. http://supercsv.sourceforge.net/
csvreader
Library for reading and writing CSV and plain delimited text files. All kinds of CSV files can be handled, text qualified, Excel formatted, etc. http://www.csvreader.com/java_csv.php
Flat file parser that handles CSV, fixed length and custom delimiters.
Export a DataSet to a fixed length or delimited format. FlatPack provides a sorting mechanism for your flat files. http://flatpack.sourceforge.net/
CSVJDBC
CsvJdbc is a simple read-only JDBC driver that uses Comma Separated Value (CSV) files as database tables. http://csvjdbc.sourceforge.net/
FFP
FFP - Flat file parsing library, is used to parse text files where lines can be
interpreted according to positional patterns. The library can handle both multi-line formats
and files containing lines have different known formats ("mixed format" files). http://jffp.sourceforge.net/