We are currently building a Java based server that can interact with Sharepoint 2007/2010 and the Office365 version webservices via Axis2. It seems that we can get Basic/NTLM authentication to work with the Sharepoint 2007/2010 but not with the Office365 version.
This probably is due to fact that Office365 version supports only Claims-based Authentication. Can we actually authenticate from Java? Is there open source support for Claims-based Authentication?