Dialogs in applets
I saw a message a while back in the list about using modal dialogs in Applets. I just want to get a Dialog to work in an applet and could use some advice. The constructor for a Dialog wants a Frame. How do I get a Frame from a JApplet? Some documentation I had suggested using the getParent() method on the applet, but this is no good since it returns a Container. Doug
Unix/Linux commands using Java
Hi! I just finished studying Java on a Windows environment using VisualJ++ and Visual Cafe for Windows. Now, I want to start writing a java program in my RH5.2 linux box using JDK1.17a, which I just installed. I have some questions before I start: 1. Can I call Unix/Linux commands from my java program? If I can, where can I get information/examples? 2. Can I combine Perl with Java? 3. Can I get javax.swing package in Linux? I will appreciate any help I could get. Sincerely, Walter G. da Cruz Linux and Java will save the world :-) | 408.294.4750 http://www.concentric.net/~Wdacruz/Index.shtml | [EMAIL PROTECTED] ___|___
RE: Unix/Linux commands using Java
> 1. Can I call Unix/Linux commands from my java program? Don't know about examples, but check out the Runtime core library. (Specifically the Exec method.) > 2. Can I combine Perl with Java? Ummm... Not exactly sure what you want to do, but using the Exec method (check above) you should be able to execute perl code. > 3. Can I get javax.swing package in Linux? Just download Swing-1.1beta3 for the sun website, add swingall.jar to your classpath and away you go. I'm developing using Swing under both Linux and Windows and things are running perfectly. Greetings, // Jaco
Re: Unix/Linux commands using Java
Check out O'Reilly books, they have a Perl toolkit set which includes some java-Perl classes on CD-ROM. I perused the set briefly at a bookstore. I'm pretty sure the SW was all public-domain. This was months ago, sorry I can't be more specific. Someone else must know the details... - chris Jaco Greeff wrote: > > > 1. Can I call Unix/Linux commands from my java program? > > Don't know about examples, but check out the Runtime core library. > (Specifically the Exec method.) > > > 2. Can I combine Perl with Java? > > Ummm... Not exactly sure what you want to do, but using the Exec method > (check above) you should be able to execute perl code. > > > 3. Can I get javax.swing package in Linux? > > Just download Swing-1.1beta3 for the sun website, add swingall.jar to your > classpath and away you go. I'm developing using Swing under both Linux and > Windows and things are running perfectly. > > Greetings, > > // Jaco
Re: Time slicing or tricks to simulate it?
Download and install the native threads package, and enable it by setting the THREADS_FLAG environment variable. Green threads do "time-slice", just not very well ;-) regards [ bryce ] Barnet Wagman wrote: > It appear that the the linux implementation of java does not do > time-slicing (I'm running jdk 1.1.7v1a, using the tya jit). Is that > correct? > If so, does anyone have any suggestions for simulating time-slicing > (other than throwing in a lot of yields())? > My curent problem involves writing a gui that monitors a rather > lengthly process. I'd like to have the compute intensive method > update a gui monitor as it proceeds. However, the compute intensive > method seems to consume all the time - the gui doesn't even get > repainted until the compute intensive method finishes. Raising the > priority of the gui (and putting in a few yields()) doesn't make any > differences. > Any suggestions would be appreciated.
Re: Dialogs in applets [finding the nearest frame]
Stick in this in your main applet code:
static Component getAncestorFrame( Component comp )
{
while ( comp != null && !instanceof Frame )
comp = (Component)comp.getParent() );
return (comp);
}
Pete
__ Reply Separator _
Subject: Re: Dialogs in applets
Author: welzel ([EMAIL PROTECTED]) at lon-mime
Date:02/12/98 05:23
I saw a message a while back in the list about using modal dialogs in
Applets. I just want to get a Dialog to work in an applet and could use
some advice. The constructor for a Dialog wants a Frame. How do I get a
Frame from a JApplet?
Some documentation I had suggested using the getParent() method on the
applet, but this is no good since it returns a Container.
Doug
Re: Unix/Linux commands using Java
2. Can I combine Perl with Java? Dunnow about Perl. If you want scripting under Java and are not afraid of learning another (very simple) language, I suggest you check out JPython. It's a Python implementation in 100% Pure Java and integrates really good with Java - you can inherit in Python from Java classes, call Java directly from Python, etcetera. Recommended! http://www.python.org/jpython (IIRC) -- Cees de Groot <[EMAIL PROTECTED]> Acriter Consulting http://www.acriter.com
Re: Unix/Linux commands using Java
>2. Can I combine Perl with Java? Larry Wall has written a toolkit called JPL that can be used for Java/Perl interfacing. You can find more information in O'Reilly's Perl Resource kit (UNIX Edition) in the Perl Utilities Guide. There are a few chapters online, see http://www.oreilly.com/catalog/prkunix/excerpt/UGtoc.html Cheers, Roel
JDK install
hi, I downloaded the jdk for linux from blackdown.org and installed it. But when i say 'java' in the jdk bin directory, it gives the message : ./../bin/i586/green_threads/java: can't load library 'libXpm.so.4 X windows is NOT installed, so is there any way to make it run without requiring x libs ? Thanks in advance, Jaimini. . Jaimini Ram Dharma Computers Bangalore Res : 5476232 Off : 5533622/4601 . Office:- A place where you can relax after your strenuous homelife.
Re: JDK install
Jaimini Ram wrote: > X windows is NOT installed, so is there any way to make it run without > requiring x libs ? Try the FAQ @ java.blackdown.org. -- _ | "Come to me all you who are weary and burdened, and I | | will give you rest." | | | | -- Jesus Christ (Mt. 11:28) | |___ _| | Ernst de Haan | email [EMAIL PROTECTED]| | Java programmer | web members.xoom.com/znerd/ | | Utrecht University| icq# 21871778 | |___|_|
installation
Hi, I followed the install notes for jdk117 on redhat 51 and get the message CLASSPATH not set ??? when i try to use it , the notes say I dont have to do this. TIA and regards.
Servlet with Chinese
Hello everybody,
I'm just working Java Servlet with my Web on Redhat 5.1 & Win$ NT 4.
The problem is I can't pass my Chinese characters to my Servlets via
GET or PUT method, when I use getParameter(somename) to get somename's
value, it simply converts any charactor >=0x80 with 0x3f ('?'). The same
thing is also happened with jdbc.
I know it's caused by InputStream. But I have no idea to solve it. Any
one can help me?
Thanks,
Chu mailto:[EMAIL PROTECTED]
Re: Time slicing or tricks to simulate it?
You might want to check that you are not doing your compute intensive task on the event thread, as this is the thread that does the painting of components. I spin off a thread for my (very) compute intensive task, set its priority low and it works just fine on green threads. Rob Barnet Wagman wrote: > It appear that the the linux implementation of java does not do > time-slicing (I'm running jdk 1.1.7v1a, using the tya jit). Is that > correct? > If so, does anyone have any suggestions for simulating time-slicing > (other than throwing in a lot of yields())? > My curent problem involves writing a gui that monitors a rather > lengthly process. I'd like to have the compute intensive method > update a gui monitor as it proceeds. However, the compute intensive > method seems to consume all the time - the gui doesn't even get > repainted until the compute intensive method finishes. Raising the > priority of the gui (and putting in a few yields()) doesn't make any > differences. > Any suggestions would be appreciated. > --- > Barnet Wagman > [EMAIL PROTECTED] > -- -- Rob Nugent Development Manager UniKix Technologies Europe [EMAIL PROTECTED] Tel: +44 (0) 1489 585503 Fax: +44 (0) 1489 881363
The bug is still there (and problems with the 1.1.7-v1a) (Re: A bug in the parse me
On 26-Nov-98 Juergen Kreileder wrote: [About parse method] >Get 1.1.7-v1a and try again, 1.1.7 has some bugfixes for the parse methods. I got the 1.1.7-v1a and the bug is still there. The blanks are not skipped, while in the docs it is clearly written that they should be. >The parse-methods are 100% pure Java, so if 1.1.5 Linux and 1.2 Solaris >show different behavior it doesn't have to be a Linux bug, but it means >that there have been some changes to the java code between 1.1.5 and 1.2. Yes, probably it's not a problem with the Linux port, but is a fact that the behaviour is different from what I read in the docs. Should I do a bug report to the Java developers? Anyway, here is a real Linux port JDK 1.1.7-v1a problem. I get this message: /usr/local/java/bin/../bin/checkVersions: /tmp/ldd.out.889: Permission denied every time I run java and javac. The number seems to be the PID and this happens with my standard user and the superuser. Beside the annoying message, anything works fine. There seems to be something wrong somewhere in the checkVersions script. How do I fix it? --- Andrea "Kontorotsui" Controzzi - MALE Student of Computer Science at University of Pisa - Italy - E-mail: [EMAIL PROTECTED] My home page: http://www.cli.di.unipi.it/~controzz/intro.html Founder and Admiral of Hoshi no Senshi (italian Leiji Matsumoto's fan group). Creator of It.Arti.Cartoni (italian anime newsgroup) and proud member of... +-+ |. * . | | .__ . . | |oq |po _ _| | / #==>>>==#,-' (_)\ | | | ,-|~\\ ///_ ,() ,_} | | | |/|~]]] /// ,-~' .,~ / \| . | | |\_|_|_\_\~~~~' \ (/|. | | ./~ \___/ [m] \ \__// | | _bo..__ // `-,.~~ | | _-~ 0o.__( . | | \ o . | | . (_)00 | |. \~~~*,,,* ~00 | |~0 . | | ~~~---~~ | | .*| +-+ | An e-mail network of Space Cruiser Yamato and | | StarBlazers Fans | +-+
https
Hello I'm working on a project which needs to send information such as credit card number to a web server, I'm thinking of using protocol https, does java support https? If it does, how? Zoltan TAR
Re: https
[EMAIL PROTECTED] wrote: > Hello > > I'm working on a project which needs to send information > such as credit card number to a web server, I'm thinking > of using protocol https, does java support https? > > If it does, how? > > Zoltan TAR If I remember correctly, if an applet is loaded through https, any socket opened by this applet will use https by default. I could be wrong... -- Vincent Trussart [EMAIL PROTECTED] Universite de Montreal, Quebec
Re: Unix/Linux commands using Java
At 11:12 PM -0800 11/30/98, <[EMAIL PROTECTED]> wrote: >2. Can I combine Perl with Java? The latest Perl 5.005_54 come with JPL Cheers, Paul
Mylex DAC960PJ drivers
Hello, i'm trying to install Linux 5.2 on a UNISYS Aquanta QS/2U Server, the problem is: where i could find the driver for a MILEX DAC960PJ pci disk array controller? Thank's in advance. Steve
Re: installation
> paulmoody writes: paulmoody> Hi, paulmoody> I followed the install notes for jdk117 on redhat paulmoody> 51 and get the message CLASSPATH not set ??? when i paulmoody> try to use it , the notes say I dont paulmoody> have to do this. paulmoody> TIA and regards. The error message is from kaffe not from the JDK. Deinstall kaffe and the JDK will work. Juergen
Re: installation
> paulmoody wrote: > > Hi, > I followed the install notes for jdk117 on redhat 51 and get the message > CLASSPATH not set ??? when i try to use it , > the notes say I dont have to do this. logout and login :-) and read the faq before ask. -- Levente -- E-Mail: Levente Farkas <[EMAIL PROTECTED]> Homepage: http://www.inf.u-szeged.hu/~lfarkas/ PGP public key & Geek Code: [EMAIL PROTECTED] --
Re: help
I need to translate some UNIX code in a Java corresponding code. Do you know if there are java classes of Unix commands like uniq -c sort join ...etc. already made and available? Thank you very much, Antonella, Rome (Italy) _ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com
RE: https
Yes, Java does support https . All you need to do is instead of setting your URL to http://www.abc.com/something.html , you set that to https://www.abc.com/something.html (provided you enable your virtual directory). regards, Tram Nguyen N. Science Application International Corporation http://www.saic.com > -Original Message- > From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]] > Sent: Wednesday, December 02, 1998 7:02 AM > To: [EMAIL PROTECTED] > Subject: https > > > Hello > > I'm working on a project which needs to send information > such as credit card number to a web server, I'm thinking > of using protocol https, does java support https? > > If it does, how? > > Zoltan TAR
Re: installation
This is what I did: 1. Deinstall Kaffe. 2. mkdir /java // of course, you have to specify your directory 3. chown wdacruz /java 4. chgrp wdacruz /java 5. su wdacruz 6. tar xvzf jdk_1_1_7-v1a-glibc-x86_tar.gz 7. tar xvzf jdk_1_1_7-v1a-glibc-x86-native_tar.gz 8. My java directory looks like this: ... drwxr-s-x 5 wdacruz wdacruz 1024 Nov 29 18:43 jdk117_v1a ... 9. cd /home/wdacruz 10. vi .bashrc 11. add line at the end: export PATH=/java/jdk117_v1a/bin:$PATH 12. Save file, exit, and login again 13. type: 'which java' You should get: /java/jdk117_v1a/bin/java 14. type: 'java -version' You should get: java version "1.1.7" I hope this could help. Regards, Walter At 11:04 PM 12/3/98 +0930, you wrote: >Hi, I followed the install notes for jdk117 on redhat 51 and get >the message CLASSPATH not set ??? when i try to use it , the notes say I >dont have to do this. TIA and regards. Linux and Java will save the world :-) | 408.294.4750 http://www.concentric.net/~Wdacruz/Index.shtml | [EMAIL PROTECTED] ___|___
Re: JDK install
On Wed, 2 Dec 1998, Jaimini Ram wrote: > > hi, > > I downloaded the jdk for linux from blackdown.org and installed it. > But when i say 'java' in the jdk bin directory, it gives the message : > > ./../bin/i586/green_threads/java: can't load library 'libXpm.so.4 > > X windows is NOT installed, so is there any way to make it run without > requiring x libs ? [summer@possum jserv0.9.11]$ locate README | grep jdk then see Java Virtual Machine variations --- There are three versions of the Java interpreter that are shipped with this release. The default one depends on having X libraries present on your system, and has Motif statically linked in (so it does not require Motif to be installed on your machine). One other version has no dependency on X, and -- Cheers John Summerfield http://os2.ami.com.au/os2/ for OS/2 support. Configuration, networking, combined IBM ftpsites index.
Re: The bug is still there (and problems with the 1.1.7-v1a) (Re:A bug in the parse me
On Tue, 1 Dec 1998, Kontorotsui wrote: > > On 26-Nov-98 Juergen Kreileder wrote: > > [About parse method] > > >Get 1.1.7-v1a and try again, 1.1.7 has some bugfixes for the parse methods. > > I got the 1.1.7-v1a and the bug is still there. The blanks are not skipped, > while in the docs it is clearly written that they should be. > > >The parse-methods are 100% pure Java, so if 1.1.5 Linux and 1.2 Solaris > >show different behavior it doesn't have to be a Linux bug, but it means > >that there have been some changes to the java code between 1.1.5 and 1.2. > > Yes, probably it's not a problem with the Linux port, but is a fact that > the behaviour is different from what I read in the docs. > > Should I do a bug report to the Java developers? That is a good idea. It would be sensible first to verify it in an applet in Netscape (which does not use the Blackdown port). > > > Anyway, here is a real Linux port JDK 1.1.7-v1a problem. > > I get this message: > > /usr/local/java/bin/../bin/checkVersions: /tmp/ldd.out.889: Permission denied This is more usually a permissions problem, though it's odd that it happens with root. Can you, from the commandline, execute the command ls >/tmp/Clancy.was.here Does this show anything odd? ls -dl /tmp For reference, I get this: [summer@emu summer]$ ls -dl /tmp -d drwxrwxrwt 8 root root 3072 Dec 3 07:06 /tmp You can bypass this by running export JDK_NO_VERS_CHECK=don\'tbother or the csh equivalent. > > every time I run java and javac. The number seems to be the PID and this > happens with my standard user and the superuser. > Beside the annoying message, anything works fine. > -- Cheers John Summerfield http://os2.ami.com.au/os2/ for OS/2 support. Configuration, networking, combined IBM ftpsites index.
