Re: List of disc devices in a system

From:
"Martin Lansler" <lanzlord@gmail.com>
Newsgroups:
comp.lang.java.programmer
Date:
Mon, 31 Jul 2006 20:03:43 GMT
Message-ID:
<zmtzg.11386$E02.3918@newsb.telia.net>
Hi Lino,

Well I did not have any problems with my DVD drives, my floppy drive however
caused an error message to be displayed:

import java.io.File;

public class ListRoots {
    public static void main(String[] args) {
        File[] roots = File.listRoots();
        File[] ignoreRoots = new File[] { new File("a:\\") };
        listRoots: for (File file : roots) {
            for (File ignoreRoot : ignoreRoots) {
                if (file.equals(ignoreRoot)) {
                    System.out.println("[ignored]" + file);
                    continue listRoots;
                }
            }
            System.out.println((!file.canRead() ? "[not available]" : "") +
file);
        }
    }
}

Running the code above on a Windows XP gave:
[ignored]A: C: D: [not available]E: [not available]F: [not available]Z:
So maybe a workaround would be to ignore the floppy drive as the code above
does - which roots to ignore could be configurable in your application.

Cheers,
Martin.

"Lino" <marcelino.dominguez@gmail.com> wrote in message
news:1154339681.193416.267650@s13g2000cwa.googlegroups.com...

Hello,
With File.listRoots() I can get the list of roots (devices) in a
system. The problem I'm having is that I'm getting the DVD unit
although it was empty. Does anybody know how to know if the DVD unit is
empty? With File.exists() I can know it but a message box with the
error appears and I want to avoid the appearing of this box.
Thanks in advance.

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