Re: Reading from barcode scanner

Posted by ctrueden on Feb 07, 2008; 6:48pm
URL: http://imagej.273.s1.nabble.com/Reading-from-barcode-scanner-tp3697230p3697231.html

Hi Emilio,

You're using System.in to read from a USB barcode scanner? Don't you need
some kind of Java USB library like javax.usb (http://javax-usb.org/) or jUSB
(http://jusb.sourceforge.net/)?

There is no reason it shouldn't work pretty much the same from ImageJ as
from your standalone program. I doubt System.in works out of the box in
ImageJ, since ImageJ runs without a console and you would need to map some
other means of input like a text area to standard input. But I would be
surprised if you need to use standard input at all.

-Curtis

On Feb 6, 2008 5:58 PM, Emilio Miguelanez <[hidden email]> wrote:

> Hello,
>
> I want to incorporate the reading of a barcode scanner into a plugin. The
> barcode scanner is connected through a USB connection.
>
> In a standalone program, I can acquire the reading by
>
> public static void main(String[] args) throws Exception{
>        InputStream in = System.in;
>        int b;
>        while (true)
>        {
>            b = in.read();
>            if (b==-1) break;
>            // do something...
>            System.out.println((char)b);
>        }
>
>    }
>
> But when I code it in imageJ plugin, it doesn't work. Basically, imageJ
> gets
> completely stuck (Not responding).
>
> Any ideas how to solve it?
>
> Thanks in advance,
>
> Emilio
>