For jConnect version 6.0, the following packages are found inside jar files: jconn3.jar for the release build, jconn3d.jar for the debug build.
com.sybase.jdbc3.jdbc
com.sybase.jdbc3.tds
com.sybase.jdbc3.timedio
com.sybase.jdbc3.utils
com.sybase.jdbcx
The jConnect driver, com.sybase.jdbc3.jdbc.SybDriver, is in the com.sybase.jdbc3.jdbc package.