POI-OpenXML4J - Java API To Access Office Open XML documents

OpenXML4J is the POI Project's pure Java implementation of the Open Packaging Conventions (OPC) defined in .

Every OpenXML file comprises a collection of byte streams called parts, combined into a container called a package. POI OpenXML4J provides a physical implementation of the OPC that uses the Zip file format.

OpenXML4J was originally developed by , and was contributed to Apache POI in 2008. The original code is available at . Thanks to the support and guidance of Julien Chable