The Device Application Designer Code Generation wizard is integrated with the BlackBerry Java Plug-in for Eclipse.
You can launch a BlackBerry project directly from Eclipse after code generation. This allows you to debug generated device application code that contains the user interface framework within a BlackBerry project.
See the documentation on the BlackBerry developer Web site http://docs.blackberry.com/en/developers/?userType=21 for more information about the BlackBerry Java Plug-in for Eclipse.