Generating excel documents programmatically

Question

Has anyone used a Java based library for generating excel documents? Preferably support for 2003?

Answer 1

I'm currently working with Apache POI, ( http://poi.apache.org/index.html ) which is very comprehensive. The 2003 file format version is still in beta, but seems to work well enough. I'm not exercising it's power very much, just straightforward reads and writes of Excel, but it seems reliable.