A barcode can be used as a component and directly inserted into a report. To do this:
on the Insert toolbar. The Barcode Expert dialog appears. See the dialog.
Notes:
See an example: The SampleComponents catalog, included with JReport Designer, contains reports that have examples of how each component type could be used in a report. For the barcode component example, open <install_root>\Demo\Reports\SampleComponents\Barcode.cls.