jConnect version 4.1 and later include the package com.sybase.jdbcx that contains all of the Sybase extensions to JDBC. In versions of jConnect previous to 4.1, these extensions were available in the com.sybase.jdbc and com.sybase.utils packages.
The com.sybase.jdbcx package provides a consistent interface across different versions of jConnect. All of the Sybase extensions are defined as Java interfaces, which allow the underlying implementations to change without affecting applications built using these interfaces.
When you develop new applications that use Sybase extensions, use com.sybase.jdbcx. The interfaces in this package allow you to upgrade applications to versions of jConnect that follow version 4.0 with minimal changes.
Some of the Sybase extensions have been changed to accommodate the com.sybase.jdbcx interface.
