This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
That depends on what you mean by "use Applets in jsp". Applets are not part of JSPs, but they can be part of the HTML page that's generated by a JSP. If that's what you mean, simply generate an applet tag and it should work fine. See this for more details about the tag.