It is quite stable and mature (granted it's around for only a year or so). I've already used it in 3 different projects and IMHO this is the best web framework for Java. The community is very active, and it's leaded by Gavin King (from Hibernate fame).
Apparently Seam supports Groovy now (I haven't tried it yet, but it looks promising):
http://www.jboss.com/products/seam
It is quite stable and mature (granted it's around for only a year or so). I've already used it in 3 different projects and IMHO this is the best web framework for Java. The community is very active, and it's leaded by Gavin King (from Hibernate fame).
Apparently Seam supports Groovy now (I haven't tried it yet, but it looks promising):
http://blog.hibernate.org/cgi-bin/blosxom.cgi/2007/05/07