Yes, you could use an applet within your JSP page, but do you really want the applet to reload every time?
One thing you can try is :
http://j-wings.sourceforge.net/
I have not actually used this before, so I have no clue how well it works.
If you can otherwise get close enough to the look you require with an HTML table, you might be able to use an IFRAME to contain a page consisting of only the table. That should allow you to get the scroll bars you want. But if you REALLY have to use a JTable, then an applet is the only way to go.
Either way (IFRAME or applet) you're going to have to watch out for browser compatability problems, so make sure you consider what browser(s) your intended audience may be using.