The Java connector library include class libraries that you need to use when developing a connector. This connector class library contains predefined classes for connectors in Java. You use these class libraries to derive connector classes and methods. The class libraries also provide utilities, such as methods to implement tracing and logging services.
IBM provides a Java jar file (Java archive file), WBIA.jar, that contains the predefined classes and interfaces of the Java connector library. The current version of the WBIA.jar file resides in the lib subdirectory of the product directory. Older versions of the WBIA.jar file reside in the following product subdirectory:
lib\WBIA\version
where version is the version of the Java connector library. The current version of WBIA.jar is compatible with older versions of this library.