Handle CSV file

com.Ostermiller.util CSV Utils

CSVPrinter/CSVParser/ExcelCSVPrinter/ExcelCSVParser
http://ostermiller.org/utils/CSV.html

opencsv

A simple csv parser library for Java
http://opencsv.sourceforge.net/

ServingXML

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

CSVFile

A simple set of Java classes used to handle CSV
http://sourceforge.net/projects/csvfile

FlatPack

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/