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 power of the Java is limited to the API exposed by the underlying JVM. Don't think standard JDK provides any features of this sort. If you want to do this, you would have to write a JNI code to expose the Win32 function which actually creates a shared directory in remote m/c and then use it in Java with native keyword.