Q: phone interview?
A: java c++  c#. I fail more c++ questions than java.

Q: depth of understanding?
A: java c++  c#. Largely /conceptual/
c++ —- Some essential libraries like threading, STL, socket, IO

Q: coding standards, best practices, patterns?
A: java c++ c#. Some are theoretical
c# —- needs more books

Q: real world problem solving?
A: java  c#  c++. Depends on diversity of past projects, not on theoretical

Q: productivity (real projects)? Managers often focus here. Some coding tests also focus here.
A: java  c#  c++

Q: mileage?
A: java  c#  c++

Q: theoretical mileage?
A: java c++  c#
c# —- Need linq, CLR, GC, tuning,