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Using Commons CSV

Commons CSV reads and writes files in variations of the Comma Separated Value (CSV) format.

The most common CSV formats are predefined in the CSVFormat class:

Custom formats can be created using a fluent style API.


The package descriptions in the JavaDoc give an overview of the available features and various project reports are provided.

The JavaDoc API documents for the current stable release 1.0 [Java 6.0+] can be viewed in a web browser.

The subversion repository can be browsed, or you can browse/contribute via GitHub.

Release Information

The latest stable release of csv is 1.0. You may:

Alternatively you can pull it from the central Maven repositories:


Building from sources

The latest code can be checked out from our Subversion repository at http://svn.apache.org/repos/asf/commons/proper/csv/trunk/. You can build the component using Apache Maven using mvn clean package.

Note that building the website currently does not work when building with JDK 8. This is due to incompatibilities between JDK 8 and the maven-findbugs-plugin and the maven-jacoco-plugin.

Getting Involved

The commons developer mailing list is the main channel of communication for contributors. Please remember that the lists are shared between all commons components, so prefix your email by [csv].

You can also visit the #apache-commons IRC channel on irc.freenode.net or peruse JIRA. Specific links of interest for JIRA are:

Alternatively you can go through the Needs Work tags in the TagList report.

If you'd like to offer up pull requests via GitHub rather than applying patches to JIRA, we have a GitHub mirror.


The commons mailing lists act as the main support forum. The user list is suitable for most library usage queries. The dev list is intended for the development discussion. Please remember that the lists are shared between all commons components, so prefix your email by [csv].

Bug reports and enhancements are also welcomed via the JIRA issue tracker. Please read the instructions carefully.

About Commons CSV

Commons CSV was started to unify a common and simple interface for reading and writing CSV files under an ASL license. It has been bootstrapped by a code donation from Netcetera in Switzerland. There are three pre-existing BSD compatible CSV parsers which this component will hopefully make redundant (authors willing):

In addition to the code from Netcetera (org.apache.commons.csv), Martin van den Bemt has added an additional writer API.

Other CSV implementations: