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.
Rob -- Yes, I've used it in Mac OS 10.1. It's worked pretty much the same for me. There are minor differences in the way the JRE works; for example, the tabs in my JTabbedPane are centered by default on the Mac, while they're flush left by default in Windows. Go figure. But Java Web Start itself has worked well for me on the Mac. Chris Funkhouser