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I have been searching for this. All the related Java APIs are worked on images. They get the information from barcode contained in the images and print barcode to images.
My question is how to get the barcode directly from the scanner in Java? Is there any API I am missing to read barcode directly from scanner? Or, whether I need to generate in-memory image from the information got by the scanner?
AFAIK, most of barcode scanners have keyboard emulation mode. You can attach scanner to your PC, scan the barcode and scanner will provide you with barcode information emulating ordinary keypresses which you can capture in any acceptable way (e.g. as keypresslistener or inputfield in Java Swing)