Licence Questions

[Seref Arikan]

Hi,
When using apache axis for a java program that's going to be sold as a commercial 
product, what are my obligations ? 
I think using axis tools for development does not require the  distribution of source 
code for the commercial product. But if the commercial software uses axis.jar or 
similar library, must it provide the source code ? I'd really like to hear about this.
Best Regards
Seref Arikan