classpath requirements:

• To use ij, you must have derbytools.jar in your classpath. If you are using the embedded driver, you must also include derby.jar.
• To use the import and export utilities and the database class utilities, you must have derby.jar in your classpath.
• To use sysinfo, either derby.jar or derbytools.jar must be in your classpath.
• To use tools from a client with the Network Server, you must have derbyclient.jar and derbytools.jar in your classpath. See the for more information.