Rating: 

For an explanation, look about two-thirds down this page:

http://java.sun.com/docs/books/tutorial/getStarted/cupojava/win32.html#2b

Setting up your SDK's environment variables is probably an expected thing (for experienced programmers) to have to do to work with an SDK. Too bad this isn't acknowledged at the very beginning of the book. It is explained later in the book. There you go.

--Paul