Printing with Kernel 2.6.14.4

Printing with Kernel 2.6.14.4

am 21.03.2006 03:40:59 von heisspf

Hi,

Slackware 10.2 kernel 2.6.14.4

Putting /sbin/modprobe parport_pc and ... lp in rc.local I can print, however,
only when I am connected to the Internet since the print configuration tool
has no provisions for parallel port when local printer is selected. Only
Network Printer will show the setting for parallel port and Epson printers.

In my Fedora4 box with kernel 2.6.14-1... selecting local printer will show
parallel port and Epson printers and I can print w/o being connected.

How could I correct to be able to print in slackware w/o being connected.

Should I just copy the files of /lib/modules/kernel/drivers from Fedora over
the slackware?

Thanks & regards
--
Peter









-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 21.03.2006 14:44:59 von Hal MacArgle

On 03-21, Peter wrote:
> Hi,
>
> Slackware 10.2 kernel 2.6.14.4
>
> Putting /sbin/modprobe parport_pc and ... lp in rc.local I can print, however,
> only when I am connected to the Internet since the print configuration tool
> has no provisions for parallel port when local printer is selected. Only
> Network Printer will show the setting for parallel port and Epson printers.
>
> In my Fedora4 box with kernel 2.6.14-1... selecting local printer will show
> parallel port and Epson printers and I can print w/o being connected.
>
> How could I correct to be able to print in slackware w/o being connected.
>
> Should I just copy the files of /lib/modules/kernel/drivers from Fedora over
> the slackware?
>
> Thanks & regards
> --
> Peter

Doesn't 'cat filename.txt > /dev/lp0' /or/ /dev/lp1 work??
Depending on whether you're using 0x378 or 0x278??

I don't have a printer connected to the one Slack 10.2, 2.6.X
machine, so could be all wet... My one 10.2 machine using 2.4.31...

--

Hal - in Terra Alta, WV/US - Slackware GNU/Linux 10.1 (2.4.29)
..
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 23.03.2006 09:42:47 von heisspf

Thanks Hal!

haltec@kvinet.com said:
> Doesn't 'cat filename.txt > /dev/lp0'

no since /dev/lp0 is not an executable file.

I just had for 36 hours no Internet connection and therefore no printing.

Regards

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 24.03.2006 07:44:14 von heisspf

thanks Hal!

altec@kvinet.com said:
> Doesn't 'cat filename.txt > /dev/lp0' work

no since /dev/lp0 is not an executable file.

I just had for 36 hours no Internet connection and therefore no printing
and this
late reply. When connection was restored I can't send mail any more with
exmh or sylpheed????????

Luckily there is mail2web.com

Regards

Peter

------------------------------------------------------------ --------
mail2web - Check your email from the web at
http://mail2web.com/ .


-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 24.03.2006 15:55:50 von Ray Olszewski

heisspf@skyinet.net wrote:
> thanks Hal!
>
> altec@kvinet.com said:
>
>>Doesn't 'cat filename.txt > /dev/lp0' work
>
>
> no since /dev/lp0 is not an executable file.
>
> I just had for 36 hours no Internet connection and therefore no printing
> and this
> late reply. When connection was restored I can't send mail any more with
> exmh or sylpheed????????
>
> Luckily there is mail2web.com
>

Peter -- Your response reflects a misunderstanding of the relevant
permissions. When you redirect output to a file (or a pseudofile like
the device link /dev/lp0), that destination file need not be executable.
It just needs to be writable by the uid doing the redirection.

For example, these are the permissions from my stock Debian-Sid setup here:

autovcr@new-flagg:~$ ls -l /dev/lp*
crw-rw---- 1 root lp 6, 0 Feb 25 2005 /dev/lp0
crw-rw---- 1 root lp 6, 1 Feb 25 2005 /dev/lp1
crw-rw---- 1 root lp 6, 2 Feb 25 2005 /dev/lp2

So root and members of group lp can write to these files, but other
users cannot (they will get "Permission denied" because they lack write
access, NOT because the file is not executable).

Since I use neither parallel printers nor the particular X application
your earlier messages referred to, I haven't tried to figure out what
your problem is. But no one will be able to help you if you don't report
accurately the failures (specifically, the associated error messages)
of the tests that people ask you to run.

Here, for example, where I have no printer attached to lp0, I get
different failure messages as an ordinary user and as root:

autovcr@new-flagg:~$ cat mencoder_notes.txt > /dev/lp0
-bash: /dev/lp0: Permission denied
autovcr@new-flagg:~$ su
Password:
new-flagg:/home/autovcr# cat mencoder_notes.txt > /dev/lp0
bash: /dev/lp0: No such device

The response I get as autovcr means I don't have write (not execute)
permission for the file (device). The response I get as root means there
is no printer attached to the port.

You should be equally specific in your reporting to us. Oh and also try

cat filename.txt > /dev/lp1

as I have a hazy recollection that some versions of Slackware associated
lp1, not lp0, with the first parallel port.

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 25.03.2006 02:58:58 von heisspf

Thanks Ray,

>>Doesn't 'cat filename.txt > /dev/lp0' work
>
>
> no since /dev/lp0 is not an executable file.
>

Ok my mistake. It does work under su, however, not as sudo which I had
tried only.

> as I have a hazy recollection that some versions of Slackware associated
> lp1, not lp0, with the first parallel port.

It is lp0.

The reason I can't print not being connected with kernel 2.6.14 is, the way
I see it, that there is no provision for a parallel port on "local printer"
set-up, but only for "network printer".

May be I should try to fumble around the source, /usr/src/linux.

Regards

Peter



------------------------------------------------------------ --------
mail2web - Check your email from the web at
http://mail2web.com/ .


-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 26.03.2006 20:55:31 von Hal MacArgle

On 03-24, heisspf@skyinet.net wrote:
> Thanks Ray,
>
> >>Doesn't 'cat filename.txt > /dev/lp0' work
> >
> >
> > no since /dev/lp0 is not an executable file.
> >
>
> Ok my mistake. It does work under su, however, not as sudo which I had
> tried only.
>
> > as I have a hazy recollection that some versions of Slackware associated
> > lp1, not lp0, with the first parallel port.
>
> It is lp0.
>
> The reason I can't print not being connected with kernel 2.6.14 is, the way
> I see it, that there is no provision for a parallel port on "local printer"
> set-up, but only for "network printer".
>
> May be I should try to fumble around the source, /usr/src/linux.
>
> Regards
>
> Peter

Greetings: You got my curiosity in gear: I installed
Slackware 10.2, (test26) and it's module library, full install except KDE,
Tex or Games and hooked a Panasonic KX-P2123, Epson mode, printer;
and booted...

After logging in as root; lsmod reported that parport_pc and
parport were both installed automatically..

Noting there was one txt file already in root I invoked 'cat
loadlin16c.txt > /dev/lp0' and it printed perfectly.. I created
another txt file of all 60 lines and tried it too; AOK...

Since default Slack 10.2/26test is 2.6.13; something may have
happened when you bumped up from that?? I don't remember; maybe
you're not using Slackware10.2 here?? As an aside; I've been trying
to install SuSE 10.0 on the same machine, off and on for a week, to
no avail.. Forget which 2.6 patch it defaults to...

At least I know Slack still works as expected.. I didn't go
any further than that...

--

Hal - in Terra Alta, WV/US - Slackware GNU/Linux 10.1 (2.4.29)
..
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 28.03.2006 04:59:59 von heisspf

Thanks Hal!

As I mentioned in another mail your suggestion of "cat file > /dev/lp0" works
in root when there is no Internet connection. However, I cannot print when
disconnected using "cat file | lpr". Giving lpq it will just sit doing nothing
when not connected.

I installed kernel 2.6.13 and the above is the same. However, there is a
provision for parallel port for local printer in gnome-cups-manager unlike in
kernel 2.4.14.4 there is that provision only for Network printer. Beside the
point with 2.6.13 I have no sound since module snd_via82xx can not be found.
Beats me.

Regards
--
Peter

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 28.03.2006 07:20:07 von Ray Olszewski

Peter wrote:
> Thanks Hal!
>
> As I mentioned in another mail your suggestion of "cat file > /dev/lp0" works
> in root when there is no Internet connection. However, I cannot print when
> disconnected using "cat file | lpr". Giving lpq it will just sit doing nothing
> when not connected.

Right. This is pretty consistent with the rest of what you have
reported. The kernel driver itself works just fine (that's the piece
that connects the device pseudofile /dev/lp0 to the parallel port, hence
to the printer). But cupsd (the printer daemon that listens on UDP port
631 and/or a Unix port) is somehow misconfigured to require networking
to be active.

One possibility is that your printer database (in /etc/printcap, the one
lpr uses, or in /etc/cups/printers.conf, the one cupsd uses) is set to
identify all printers, even local ones, as remote printers. This could
cause them to become inaccessible if your network interface is not
configured. You would fix this by fixing printcap &/or printers.conf ...
I can't be more specific without seeing the actual contents of the files.

A more involved possibility is that for some reason you have cupsd set
to listen only on the network interface's address and not also on
localhost (I believe it defaults to listening on all interfaces, so this
would be a local error; check /etc/cups/cupsd.conf). So if your
networking is not active ... by which I mean eth0 (or perhaps ppp0) is
not configured (which could happen if you get it configured via DHCP (or
PPPoE) ... I don't know the details of your Internet connection, so I'm
guessing pretty openly here) ... there is no place for cupsd to listen.

Check this with "netstat -ln |grep 631" to see what cupsd is listening
on. Check this when you are not connected to the network (with the exact
meaning of "not connected" being the state your host was in when it
would not print). If cupsd is listening properly, you should see
something about like this:

udp 0 0 0.0.0.0:631 0.0.0.0:*

If you don't then your problem is a misconfiguration of CUPS and
networking. I can't tell you how to fix this without seeing your system
setup, but look at whatever init script starts cupsd, as well as
cupsd.conf, to see if either is limiting the interfaces cupsd will
listen on.

Depending on lpr expects about printers (from their printcap entries),
it may also fail if there is nothing listening on port 515/tcp.

All of this really is just a bunch of guesses, though.

> I installed kernel 2.6.13 and the above is the same. However, there is a
> provision for parallel port for local printer in gnome-cups-manager unlike in
> kernel 2.4.14.4 there is that provision only for Network printer.

I'm a bit confused here, Peter. CUPS is a service for managing access to
printers (an alternative to lpd), not part of a kernel. I can well
imagine that the versions of Slackware that install the two kernels are
different enough that they also have different versions of CUPS. But
once more, this is NOT a kernel problem, at least not from what you are
reporting about your tests.

> Beside the
> point with 2.6.13 I have no sound since module snd_via82xx can not be found.
> Beats me.

Are you using OSS or ALSA sound? From kernel source (I actually checked
2.6.11, not .13), the relevant OSS module appears to be SOUND_VIA82CXXX.
But 2.6.x kernels are supposed to use ALSA sound, with the relevant name
the one you list (snd-via82xx).

I'm not quite sure what your phrase "module snd_via82xx can not be
found" means. Do you mean that the kernel fails to load it? Or that you
yourself cannot find snd-via82xx.ko, by a manual search, in
/lib/modules/2.6.13? Or that it is not listed in
/lib/modules/2.6.13/modules.dep? Or something else?

You may need to check whether Slackware provides modules for precompiled
kernels in multiple packages. I can't think of any other reason why a
precompiled 2.6.x kernel should be missing this module. (Well, I suppose
it could be compiled in directly, but then your sound should work ...
and that's not a very usual practice except for embedded systems.

>
> Regards

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 28.03.2006 10:09:26 von heisspf

On Mon, 27 Mar 2006 21:20:07 -0800
Ray Olszewski wrote:

> Peter wrote:
> > Thanks Hal!
> >
> > As I mentioned in another mail your suggestion of "cat file > /dev/lp0"
works
> > in root when there is no Internet connection. However, I cannot print when
> > disconnected using "cat file | lpr". Giving lpq it will just sit doing
>> nothing when not connected.
>
> Right. This is pretty consistent with the rest of what you have
> reported. The kernel driver itself works just fine (that's the piece
> that connects the device pseudofile /dev/lp0 to the parallel port, hence
> to the printer). But cupsd (the printer daemon that listens on UDP port
> 631 and/or a Unix port) is somehow misconfigured to require networking
> to be active.
>
> One possibility is that your printer database (in /etc/printcap, the one
> lpr uses, or in /etc/cups/printers.conf, the one cupsd uses) is set to
> identify all printers, even local ones, as remote printers. This could
> cause them to become inaccessible if your network interface is not
> configured. You would fix this by fixing printcap &/or printers.conf ...
> I can't be more specific without seeing the actual contents of the files.

# Printer configuration file for CUPS v1.1.23
# Written by cupsd on Tue Mar 28 15:21:02 2006

Info 24-Pin-Series
DeviceURI epson:/dev/lp0
State Idle
Accepting Yes
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0


> A more involved possibility is that for some reason you have cupsd set
> to listen only on the network interface's address and not also on
> localhost (I believe it defaults to listening on all interfaces, so this
> would be a local error; check /etc/cups/cupsd.conf). So if your
> networking is not active ... by which I mean eth0 (or perhaps ppp0) is
> not configured (which could happen if you get it configured via DHCP (or
> PPPoE) ... I don't know the details of your Internet connection, so I'm
> guessing pretty openly here) ... there is no place for cupsd to listen.

I have a broadband connection via DHCP

> Check this with "netstat -ln |grep 631" to see what cupsd is listening
> on. Check this when you are not connected to the network (with the exact
> meaning of "not connected" being the state your host was in when it
> would not print). If cupsd is listening properly, you should see
> something about like this:

sudo /etc/rc.d/rc.inet1 stop
heisspf@~:$ netstat -ln |grep 631
tcp 0 0 0.0.0.0:631 0.0.0.0:* LISTEN
udp 0 0 0.0.0.0:631 0.0.0.0:*

sudo /etc/rc.d/rc.inet1 start
heisspf@~:$ netstat -ln |grep 631
tcp 0 0 0.0.0.0:631 0.0.0.0:* LISTEN
udp 0 0 0.0.0.0:631 0.0.0.0:*

There seems to be no difference


> udp 0 0 0.0.0.0:631 0.0.0.0:*
>
> If you don't then your problem is a misconfiguration of CUPS and
> networking. I can't tell you how to fix this without seeing your system
> setup, but look at whatever init script starts cupsd, as well as
> cupsd.conf, to see if either is limiting the interfaces cupsd will
> listen on.

On separate mail I am sending to you /etc/rc.d/rc.cupsd as an attachment.

This is from cupsd.conf which I have never touched.

# Listen to (Port/Listen)
#
# Ports/addresses that are listened to. The default port 631 is reserved
# for the Internet Printing Protocol (IPP) and is what is used here.
#
# You can have multiple Port/Listen lines to listen to more than one
# port or address, or to restrict access.
#
# Note: Unfortunately, most web browsers don't support TLS or HTTP Upgrades
# for encryption. If you want to support web-based encryption you will
# probably need to listen on port 443 (the "HTTPS" port...).
#
# ex: 631, myhost:80, 1.2.3.4:631
#
# Port 80
# Port 631
# Listen hostname
# Listen hostname:80
# Listen hostname:631
# Listen 1.2.3.4
# Listen 1.2.3.4:631
#
#Port 631

Listen *:631


> Depending on lpr expects about printers (from their printcap entries),
> it may also fail if there is nothing listening on port 515/tcp.
>
> All of this really is just a bunch of guesses, though.
>
> > I installed kernel 2.6.13 and the above is the same. However, there is a
> > provision for parallel port for local printer in gnome-cups-manager unlike
in
> > kernel 2.4.14.4 there is that provision only for Network printer.

This does not hold any longer after I enabled paraport_pc and lp modules in
rc.modules.

> I'm a bit confused here, Peter. CUPS is a service for managing access to
> printers (an alternative to lpd), not part of a kernel. I can well
> imagine that the versions of Slackware that install the two kernels are
> different enough that they also have different versions of CUPS. But
> once more, this is NOT a kernel problem, at least not from what you are
> reporting about your tests.
>
> > Beside the
> > point with 2.6.13 I have no sound since module snd_via82xx can not be
found.
> > Beats me.
>
> Are you using OSS or ALSA sound? From kernel source (I actually checked
> 2.6.11, not .13), the relevant OSS module appears to be SOUND_VIA82CXXX.
> But 2.6.x kernels are supposed to use ALSA sound, with the relevant name
> the one you list (snd-via82xx).

I am using ALSA

> I'm not quite sure what your phrase "module snd_via82xx can not be
> found" means. Do you mean that the kernel fails to load it? Or that you
> yourself cannot find snd-via82xx.ko, by a manual search, in
> /lib/modules/2.6.13? Or that it is not listed in
> /lib/modules/2.6.13/modules.dep? Or something else?

That is the message on booting. FATAL failed to load module snd_via82xx

> You may need to check whether Slackware provides modules for precompiled
> kernels in multiple packages. I can't think of any other reason why a
> precompiled 2.6.x kernel should be missing this module. (Well, I suppose
> it could be compiled in directly, but then your sound should work ...
> and that's not a very usual practice except for embedded systems.
>

I just went back to kernel 2.6.14.4 where all snd.... modules are loaded.

Regards
Peter

--
Peter
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 29.03.2006 05:55:34 von heisspf

On Tue, 28 Mar 2006 07:42:21 -0500
David Fierbaugh wrote:

> With cups apparently running, and root having the ability to print manually,

> try configuring your printer with cups web based tool.
>
> Point your favorite web browser to 'http://localhost:631/'. This should open

> cups configuration. The login will probably be root and your root password,
> this can be changed later, after you get printing working. From there you
can
> add/change/delete printers and their settings. You can also print test pages

> from cups once you've got a printer setup correctly.
>
Thanks!
I have done all this. Now I tried it again adding a new printer, then w/o
being connected to print a test. It will just sit and wait and wait. So I
closed the page http://localhost:631/admin and tried to open it again w/o
being connected. The result was the machine froze, keyboard, second hand on
clock and I had to do a reset.

Regards

--
Peter
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Printing with Kernel 2.6.14.4

am 03.04.2006 04:04:06 von heisspf

Just want to inform, the problem that I could not print offline was solved
with the help of a certain Jorgeu from Venezuela, in Dropline-Gnome-Forum,
Slackware Discussions under "Unable to Print Offline".

Jorgeu asked me what the output is of /sbin/route when offline. There was
none. From which he concluded correctly that it is a loopback configuration
issue.

He told me then to input the following command:

# route add 127.0.0.0 dev lo

and behold Jorgeu was right: And you should be printing offline without
problems.

And it seems to hold. This morning when I bootet I was offline and could print.

Thank you Jorgeu!!
--
Peter

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Problems with Scanner class in Blackdown JDK

am 04.04.2006 05:28:56 von Mac

I'm currently using the most recent release of the
Gentoo kernel, version 2.6.15. The JDK I am using is
Blackdown 1.4.2.03.

Right now I'm taking a college java course, and I'm
trying to get my java up and running so I can do
homework outside of the labs. The IDE I am supposed
to be using for the class is Bluej (which I have
installed), although I have duplicated the problems I
have been having on Netbeans as well.

Basic java programs seem to compile just fine, but I
have trouble whenever I try to use certain import
statements, specifically with the Scanner class. For
example:

import java.util.Scanner;
(error message: cannot resolve symbol - class
Scanner)

-- the same error message occurs with
import java.util.*;

This class is VERY important to have for my course, as
a large number of the projects we have utilize it.
The course I'm taking uses it to get keyboard input.
(example: Scanner keyboard = new Scanner(System.in);
int exampleInt = keyboard.nextInt(); // reads in an
integer using the new Scanner object, keyboard)

The computers at the campus labs are Windows-based.
However, java is very portable, and I have no problems
writing a program in the Linux Bluej, then e-mailing
it to myself and opening in the Windows Bluej on
campus. The programs written in Linux compile in
Windows, even when they don't compile in Linux. While
I can still keep doing it this way, it would be nice
to be able to test and debug my projects BEFORE I get
to class, if you know what I mean.

-- Does anyone have a suggestions as to why I might
be getting this message?
-- I know that Java is fairly portable, but is it
possible that the Scanner class is not available for
Linux?

A bit of info:

mycomputer / # java-config -v #version of JVM
java version "1.4.2-03"
Java(TM) 2 Runtime Environment, Standard Edition
(build Blackdown-1.4.2-03)
Java HotSpot(TM) Client VM (build Blackdown-1.4.2-03,
mixed mode)

Any help would be appreciated. Thanks!

Mac




__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Problems with Scanner class in Blackdown JDK

am 05.04.2006 08:26:12 von Yawar Amin

On 4/4/06, Mac wrote:
> I'm currently using the most recent release of the
> Gentoo kernel, version 2.6.15. The JDK I am using is
> Blackdown 1.4.2.03.
>
> Right now I'm taking a college java course, and I'm
> trying to get my java up and running so I can do
> homework outside of the labs. The IDE I am supposed
> to be using for the class is Bluej (which I have
> installed), although I have duplicated the problems I
> have been having on Netbeans as well.
>
> Basic java programs seem to compile just fine, but I
> have trouble whenever I try to use certain import
> statements, specifically with the Scanner class. For
> example:
>
> import java.util.Scanner;
> (error message: cannot resolve symbol - class
> Scanner)
>
> -- the same error message occurs with
> import java.util.*;
>
> This class is VERY important to have for my course, as
> a large number of the projects we have utilize it.
> The course I'm taking uses it to get keyboard input.
> (example: Scanner keyboard = new Scanner(System.in);
> int exampleInt = keyboard.nextInt(); // reads in an
> integer using the new Scanner object, keyboard)
>
> The computers at the campus labs are Windows-based.
> However, java is very portable, and I have no problems
> writing a program in the Linux Bluej, then e-mailing
> it to myself and opening in the Windows Bluej on
> campus. The programs written in Linux compile in
> Windows, even when they don't compile in Linux. While
> I can still keep doing it this way, it would be nice
> to be able to test and debug my projects BEFORE I get
> to class, if you know what I mean.
>
> -- Does anyone have a suggestions as to why I might
> be getting this message?
> -- I know that Java is fairly portable, but is it
> possible that the Scanner class is not available for
> Linux?
>
> A bit of info:
>
> mycomputer / # java-config -v #version of JVM
> java version "1.4.2-03"
> Java(TM) 2 Runtime Environment, Standard Edition
> (build Blackdown-1.4.2-03)
> Java HotSpot(TM) Client VM (build Blackdown-1.4.2-03,
> mixed mode)
>
> Any help would be appreciated. Thanks!
>
> Mac

Try Sun's JDK.

--
Yawar
Malaysia +60 (12) 918 6642
Bangladesh +880 (174) 614 754 or +880 (2) 882 1848 or +880 (175) 003
706 or +880 (189) 250 170
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Problems with Scanner class in Blackdown JDK

am 07.04.2006 00:05:14 von Mac

I switched to Sun's JDK, and I'm still having the same
problem. What can you recommend?

Mac

> --- Yawar Amin wrote:
>
> >
> > Try Sun's JDK.
> >
> > --
>
>
> > On 4/4/06, Mac wrote:
> > > I'm currently using the most recent release of
> the
> > > Gentoo kernel, version 2.6.15. The JDK I am
> using
> > is
> > > Blackdown 1.4.2.03.
>
> > > Basic java programs seem to compile just fine,
> but
> > I
> > > have trouble whenever I try to use certain
> import
> > > statements, specifically with the Scanner class.
>
> > For
> > > example:
> > >
> > > import java.util.Scanner;
> > > (error message: cannot resolve symbol - class
> > > Scanner)
> > >
> > > -- the same error message occurs with
> > > import java.util.*;
> > >
>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam
> protection around
> http://mail.yahoo.com
>


__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Problems with Scanner class in Blackdown JDK

am 08.04.2006 09:45:56 von Yawar Amin

On 4/7/06, Mac wrote:
> I switched to Sun's JDK, and I'm still having the same
> problem. What can you recommend?
>
> Mac

http://java.sun.com/j2se/1.5.0/docs/api/java/util/Scanner.ht ml says
java.util.Scanner has only been present in the API since version 1.5.
You need to use the latest version of the JDK.

--
Yawar
Malaysia +60 (12) 918 6642
Bangladesh +880 (174) 614 754 or +880 (2) 882 1848 or +880 (175) 003
706 or +880 (189) 250 170
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Problems with Scanner class in Blackdown JDK

am 13.04.2006 02:04:12 von Mac

I figured out that the problem was that my system
wasn't using Sun's JDK as the default, even though it
said it was using Sun's JVM. I ended up having to do
a few things manually, instead of using the Gentoo
java-config tool, and it finally worked.

Thanks for the help!

Mac


>
http://java.sun.com/j2se/1.5.0/docs/api/java/util/Scanner.ht ml
> says
> java.util.Scanner has only been present in the API
> since version 1.5.
> You need to use the latest version of the JDK.
>
> --


__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs