Creating a Zip File Programmatically

I'm fairly new to extending Ant using custom tasks. I need to create a Zip Task programmatically in order to package a set of directories. So far, I've come up with the following. Basically, I'm creating a Zip Task. Then I'm adding ZipFileSets to the Zip Task. Everything blows up then I tr

Initiating a Zip Task programmatically

All, I have a need to a create a Zip file with my custom Task. Does anyone have an example of how to use the Ant Zip and ZipFileSet classes to achieve this? Thanks in advance!