Comments for Some thoughts about things http://fraaargh.wordpress.com No forward thinking leads to afterward sinking Wed, 30 Dec 2009 19:28:38 +0000 http://wordpress.com/ hourly 1 Comment on How-to java jars and MANIFEST.MF by Giulio http://fraaargh.wordpress.com/2008/07/13/how-to-java-jars-and-manifestmf/#comment-138 Giulio Wed, 30 Dec 2009 19:28:38 +0000 http://fraaargh.wordpress.com/?p=32#comment-138 Hi Again, the matter looked like splittable into many articles, so I generated the first of the serie: http://www.wikijava.org/wiki/Packing_library_packages_into_a_jar_file Please don't hesitate correcting it (it's a wiki) if I wasn't correct in anything. Pa pa, Giulio Hi Again,

the matter looked like splittable into many articles, so I generated the first of the serie:

http://www.wikijava.org/wiki/Packing_library_packages_into_a_jar_file

Please don’t hesitate correcting it (it’s a wiki) if I wasn’t correct in anything.

Pa pa,
Giulio

]]> Comment on How-to java jars and MANIFEST.MF by Giulio http://fraaargh.wordpress.com/2008/07/13/how-to-java-jars-and-manifestmf/#comment-137 Giulio Wed, 30 Dec 2009 18:30:19 +0000 http://fraaargh.wordpress.com/?p=32#comment-137 Indeed, your guess is right, only the uncompressed jars are used... it's basically the same thing as having a bigger sourcecode, which reimplements the classes that come from the library jar files. The difference is that generally the jars come already compiled in .class files, while our class files come from source code rather than precompiled software. I think that we would need to decorate the classloader in order to make it work with the jars in the same ways J2EE works with the WAR and EAR files. To load classes from a compressed package it's actually a prerogative of j2ee. Tschuss, Giulio Indeed, your guess is right, only the uncompressed jars are used… it’s basically the same thing as having a bigger sourcecode, which reimplements the classes that come from the library jar files.

The difference is that generally the jars come already compiled in .class files, while our class files come from source code rather than precompiled software.

I think that we would need to decorate the classloader in order to make it work with the jars in the same ways J2EE works with the WAR and EAR files.

To load classes from a compressed package it’s actually a prerogative of j2ee.

Tschuss,
Giulio

]]> Comment on How-to java jars and MANIFEST.MF by Francois MAROT http://fraaargh.wordpress.com/2008/07/13/how-to-java-jars-and-manifestmf/#comment-136 Francois MAROT Wed, 30 Dec 2009 10:52:25 +0000 http://fraaargh.wordpress.com/?p=32#comment-136 @Giulio could you post a link to your article here once you have wrote it ? It could help all the people who look for information about jars, classpatch and manifest ;) By the way, as the jar files are nothing more than zip files, maybe the original jars were included but not used in the jar you're talking about. Did you try to delete the included jars from the containing jar and see if the programm still works ? I would tend to think so as I think the .class are used and not the included jars themselves. @Giulio could you post a link to your article here once you have wrote it ? It could help all the people who look for information about jars, classpatch and manifest ;)
By the way, as the jar files are nothing more than zip files, maybe the original jars were included but not used in the jar you’re talking about. Did you try to delete the included jars from the containing jar and see if the programm still works ? I would tend to think so as I think the .class are used and not the included jars themselves.

]]> Comment on How-to java jars and MANIFEST.MF by Giulio http://fraaargh.wordpress.com/2008/07/13/how-to-java-jars-and-manifestmf/#comment-135 Giulio Wed, 30 Dec 2009 10:29:57 +0000 http://fraaargh.wordpress.com/?p=32#comment-135 Hi Francois, Thanks for your answer. That's exactly what I thought, until I found a jar package containing the packed jars and working fine. This left me kinda disconcerned. That's why I asked. Checking better I found that the JAR contains ALSO the unpacked .class files from the library jars. Tricks.... this is not too elegant... but it works. I'll write an article about this on my site. ciao ciao, G Hi Francois,

Thanks for your answer. That’s exactly what I thought, until I found a jar package containing the packed jars and working fine. This left me kinda disconcerned. That’s why I asked.

Checking better I found that the JAR contains ALSO the unpacked .class files from the library jars.

Tricks…. this is not too elegant… but it works.

I’ll write an article about this on my site.

ciao ciao,

G

]]> Comment on How-to java jars and MANIFEST.MF by Francois MAROT http://fraaargh.wordpress.com/2008/07/13/how-to-java-jars-and-manifestmf/#comment-134 Francois MAROT Wed, 30 Dec 2009 00:48:35 +0000 http://fraaargh.wordpress.com/?p=32#comment-134 Glulio thanks for your comment. To my knowlege, you can't pack jars inside another jar... Too bad ! But I think there exist programms that can unpack jars and repack them inside your own jar. Or at least help you make this process. But the drawback is you can't update easily the libraries you use: it becomes harder than simply copying the new version in you "lib" folder... So my advice would be to stick to the usual way: having a lib folder referenced from the classpath and accept it ;) Glulio thanks for your comment.
To my knowlege, you can’t pack jars inside another jar… Too bad !
But I think there exist programms that can unpack jars and repack them inside your own jar. Or at least help you make this process. But the drawback is you can’t update easily the libraries you use: it becomes harder than simply copying the new version in you “lib” folder… So my advice would be to stick to the usual way: having a lib folder referenced from the classpath and accept it ;)

]]> Comment on How-to java jars and MANIFEST.MF by Giulio http://fraaargh.wordpress.com/2008/07/13/how-to-java-jars-and-manifestmf/#comment-133 Giulio Wed, 30 Dec 2009 00:37:31 +0000 http://fraaargh.wordpress.com/?p=32#comment-133 Hi, Thanks for your great article, it was very useful. How about packing the classpath jars into the jar, in order to have a unique executable file containing my program and the libraries? I'm trying to do so, but the manifest seems to refer only to outside the jar. any clue? Thanks, Giulio Hi,

Thanks for your great article, it was very useful. How about packing the classpath jars into the jar, in order to have a unique executable file containing my program and the libraries?

I’m trying to do so, but the manifest seems to refer only to outside the jar.

any clue?

Thanks,
Giulio

]]> Comment on Remotly launch a batch file on a Windows computer by Francois MAROT http://fraaargh.wordpress.com/2008/02/20/remotly-launch-a-batch-file-on-a-windows-computer/#comment-132 Francois MAROT Sat, 26 Dec 2009 22:11:55 +0000 http://fraaargh.wordpress.com/?p=30#comment-132 Hi Neiv, thanks for your comment. I realize my exemple was not very well explained ! So to answer all your questions: 1- yes, the code given must be in a separate batch file, on any computer with network access to computer "targetMachine". 2- "set file=\\eici01\user\FMA\test.bat" was a path to the file to be run remotly. This file can be either remote (as in my exemple) or local (it would read like set file=c:\xxxxx\test.bat). So you are right, it can be independant of the initiating or remote machine. 3- \user\FMA\ was only the path to the file. But the use of "user" for the directory name was misleading... So I changed it to "A\Path\To\A\Shared\File" now ;) 4- In fact, my code only instruct the "targetMachine" computer to run a batch file. As long as targetMachine can access this batch file (locally or remotly on a shared folder), you can instruct it to run this file with my code. So I would advise you to begin by testing your batch file on the targetMachine computer. Log onto targetMachine, then try to run your batch file (test.bat). If it is successful, then try to make it run on targetMachine by initiating it from another computer on the network with my code. In your exemple, if you place both my code batch and the target test.bat in your maintenance_files, you have to make sure that "maintenance_files" is a shared directory that the "targetMachine" can access on the network. The best is to first try with "targetMachine" local filesystem I think. Hope this helps ! Hi Neiv, thanks for your comment. I realize my exemple was not very well explained !
So to answer all your questions:
1- yes, the code given must be in a separate batch file, on any computer with network access to computer “targetMachine”.
2- “set file=\\eici01\user\FMA\test.bat” was a path to the file to be run remotly. This file can be either remote (as in my exemple) or local (it would read like set file=c:\xxxxx\test.bat). So you are right, it can be independant of the initiating or remote machine.
3- \user\FMA\ was only the path to the file. But the use of “user” for the directory name was misleading… So I changed it to “A\Path\To\A\Shared\File” now ;)
4- In fact, my code only instruct the “targetMachine” computer to run a batch file. As long as targetMachine can access this batch file (locally or remotly on a shared folder), you can instruct it to run this file with my code.

So I would advise you to begin by testing your batch file on the targetMachine computer. Log onto targetMachine, then try to run your batch file (test.bat). If it is successful, then try to make it run on targetMachine by initiating it from another computer on the network with my code. In your exemple, if you place both my code batch and the target test.bat in your maintenance_files, you have to make sure that “maintenance_files” is a shared directory that the “targetMachine” can access on the network. The best is to first try with “targetMachine” local filesystem I think.

Hope this helps !

]]> Comment on Remotly launch a batch file on a Windows computer by Neiv http://fraaargh.wordpress.com/2008/02/20/remotly-launch-a-batch-file-on-a-windows-computer/#comment-131 Neiv Sat, 26 Dec 2009 01:36:50 +0000 http://fraaargh.wordpress.com/?p=30#comment-131 I've been looking for something like this for quite some time, but it doesn't seem to be working for some reason. Although it's not explicitly stated, I assume the code itself is to be placed into a separate batch file, even though it is referencing another batch file called test.bat? Also, I'm not quite certain I understand the second line of the file, namely: set file=\\eici01\user\FMA\test.bat From what I gather, this is a file/path located on a shared drive independent of the initiating machine or the remote machine? What does eici01 refer to? is "user" to be switched out with the actual user name of the drive that hosts the file? What does FMA refer to? Is that supposed to be changed? Can I just place the file on the same initiating machine that launches the file? In other words, say I place this code into a file called launch.bat which resides on in a "maintenance_files" folder on the root of c:\ of my server machine (c:\maintenance_files). Further, say I want this batch file to launch the test.bat file referenced in the "set file" line above. Does the test.bat file reside on the "receiver" machine (the client) or the "sender" machine (the server)? Could you perhaps provide a concrete example that would make this clearer? Thanks. I’ve been looking for something like this for quite some time, but it doesn’t seem to be working for some reason. Although it’s not explicitly stated, I assume the code itself is to be placed into a separate batch file, even though it is referencing another batch file called test.bat?

Also, I’m not quite certain I understand the second line of the file, namely:

set file=\\eici01\user\FMA\test.bat

From what I gather, this is a file/path located on a shared drive independent of the initiating machine or the remote machine? What does eici01 refer to? is “user” to be switched out with the actual user name of the drive that hosts the file? What does FMA refer to? Is that supposed to be changed?

Can I just place the file on the same initiating machine that launches the file? In other words, say I place this code into a file called launch.bat which resides on in a “maintenance_files” folder on the root of c:\ of my server machine (c:\maintenance_files). Further, say I want this batch file to launch the test.bat file referenced in the “set file” line above. Does the test.bat file reside on the “receiver” machine (the client) or the “sender” machine (the server)? Could you perhaps provide a concrete example that would make this clearer? Thanks.

]]> Comment on Pratique de syndic (Foncia) : limite, limite… by Francois MAROT http://fraaargh.wordpress.com/2008/08/12/pratique-de-syndic-foncia-limite-limite%e2%80%a6/#comment-127 Francois MAROT Fri, 23 Oct 2009 20:46:44 +0000 http://fraaargh.wordpress.com/?p=40#comment-127 Ah oui quand meme, 125€ !!! Je ne me souviens plus comment ils nous avaient passé ce classeur, mais il ne me semble pas que c'etait par la Poste. Tout ce que je peut vous dire, c'est qu'ils n'ont posé aucun probleme lorsque j'ai parlé de rendre ce classeur. Ils sont tellement conscient d'etre de mauvaise foi qu'il preferent ne pas prendre de risque avec les gens qui sont pret à râler. Adressez vous donc à votre agence avant de faire quoi que ce soit, ils devraient vite abdiquer ;) Ah oui quand meme, 125€ !!! Je ne me souviens plus comment ils nous avaient passé ce classeur, mais il ne me semble pas que c’etait par la Poste. Tout ce que je peut vous dire, c’est qu’ils n’ont posé aucun probleme lorsque j’ai parlé de rendre ce classeur. Ils sont tellement conscient d’etre de mauvaise foi qu’il preferent ne pas prendre de risque avec les gens qui sont pret à râler. Adressez vous donc à votre agence avant de faire quoi que ce soit, ils devraient vite abdiquer ;)

]]> Comment on Pratique de syndic (Foncia) : limite, limite… by angele http://fraaargh.wordpress.com/2008/08/12/pratique-de-syndic-foncia-limite-limite%e2%80%a6/#comment-126 angele Fri, 23 Oct 2009 18:11:24 +0000 http://fraaargh.wordpress.com/?p=40#comment-126 Bonjour, J'ai le même souçi mais moi c'est 125 euros qu'ils me demandent toujours Foncia!!!!! Pourriez vous me dire comme vous avez reçu ce classeur par le Poste en Colissimo ???? car moi il me demande 125 sur le compte de charges trimestriels et je n'avais jusqu'alors rien reçu, mais aujourd'hui colis à retirer à La poste il provient de Foncia, je crois que cela doit être le fameux classeur, j'ai envie de renvoyer à l'expéditeur. Merci Bonjour,

J’ai le même souçi mais moi c’est 125 euros qu’ils me demandent toujours Foncia!!!!!
Pourriez vous me dire comme vous avez reçu ce classeur par le Poste en Colissimo ???? car moi il me demande 125 sur le compte de charges trimestriels et je n’avais jusqu’alors rien reçu, mais aujourd’hui colis à retirer à La poste il provient de Foncia, je crois que cela doit être le fameux classeur, j’ai envie de renvoyer à l’expéditeur.
Merci

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