Source: Source: http://www.theregister.co.uk/2008/07/23/ubuntu_springframework_glassfish/
OSCON: Exclusive Canonical has been in talks with Sun Microsystems and SpringSource to support one of their open source Java application server stacks in the Ubuntu core, to increase Ubuntu's enterprise adoption.
Canonical told The Reg that it is in the process of selecting which open source Java Enterprise Edition (Java EE) framework to make available in the main part of its popular Linux distro. Sun's streamlined GlassFish 3.0 and the modular Application Platform are contenders.
Canonical's Ubuntu server engineering manager Rick Clark called it: "Very, very important to us to get a full Java stack out of the box."