Or they just want to make Java less competitive to C#.
Though I do hope that they'll make the sources available. It's not like just a code dump will suddenly transform into viable competition for Xamarin.
The only thing they are supporting is some hybrid framework that wraps ADP into some Java version of Cordova.
http://www.oracle.com/technetwork/developer-tools/maf/overvi...
With offers like that, no other everyone that favours native has mostly went C# or C++.