This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
The Java Sound API should work; I think it's capable of sampling from just about any attached microphone. For the camera, check out Apple's Quicktime for Java. If that don't cut it, you'd have to use JNI.