How to use Oracle SQLdeveloper with HSQL / Hypersonic DB's JDBC driver
I was looking for the same thing, then found this:
http://forums.oracle.com/forums/thread.jspa?messageID=4241526�
So basically Oracle doesn't support it, and you can't add a new TAB on your own, even if you have the JDBC driver.
You can try other tool like ExecuteQuery (executequery dot org)