After working for the last few months with the developer of Cyberduck (David Kocher), there is a shiny new release of Sardine. This is the best modern Java webdav client around.
This release makes it safer, easier to use and more compatible with webdav servers than ever. I can also now brag that my code is being used in a really cool product used by a ton of people. The last release had nearly 900 downloads, so I expect this next release to be even more popular.