This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
That page doesn't use Basic Authentication (which is what your code does), it uses form authentication. You'll need to post the account info to the proper URL, after which a cookie will probably be set which must then be sent in all subsequent page accesses.
I recommend to use a library like jWebUnit (or HtmlUnit) for programmatic access to web sites; that's generally simpler than using the URL and URLConnection classes.