Java Is #1 (18.387%), C (17.080%) second, Objective-C (9.803%) third. C++ and C# are at the ranks four and five.
It seems like all C-based languages are doing well.
NEW 2016: Java EE 7 Workshops: Bootstrap, Effective, Architectures, April, 4th-6th, Munich's Airport
On demand workshops: Java EE 7 Bootstrap, Effective Java EE 7 and NEW: Java EE 7 Testing are available for streaming