Does the 2D API make any provisions for double buffering? If so, is this API in pure java (no platform dependencies)? If there is no double buffering how are 2D game programmers handling game displays, or is display shearing not really in issue?
In short, Java programmers take advantage of the fact that they can store a "rendering context" off-screen. So, following normal double-buffering techniques they write everything to their offscreen context (or Graphics object. Is it Graphics2D for Swing and Java2D now) and then, once finished, switch Graphics objects Although depending on the platform will boost the speed, you can still wrangle some better performance through double-buffering with Graphics objects.
Last I checked, there was no explicit provision for double buffering in the 2D API. You have to allocate an image buffer, perform your graphics operations on that, and then blit to the primary Graphics context.
And yes, it is called Graphics2D now. It extends the Graphics class.