I’ve just checked the Barbecue project, and seems interesting if you want to use barcode in any java application.

Barbecue is an open-source, Java barcode library that provides the means to create barcodes for printing and display in Java applications. A number of barcode formats are supported and many more can be added via the flexible barcode API. Barcodes can be outputted to Graphics objects, or used as a Swing component, or written out as SVG. Please use the links on the left to find out more about Barbecue.