Several questions (language comparison)

[flameout]

Our team (well, I, as our only veteran programmer) is trying to decide on the language to program the robot in next year. While thinking this over, I have come up with several questions.

Please correct me if I'm wrong in these questions.

In the C++ WPILib, is there a way to set thread priorities? I believe it can be done in both LabVIEW and Java.

What about UDP communication? I know LabVIEW contains primitives, but is this doable in Java and C++?

Is there some sort of event handling available? Could I, for example, run a section of code whenever a new image is available from the camera, or run a section of code when a digital input changes without polling?

I'll post more questions when I can think of them.

Thank you for any help.