topic [resolved] Error Could not find the main class in Talend Studio

[resolved] Error Could not find the main class

dpdfr_ag — Sat, 16 Nov 2024 12:45:35 GMT

Hi,
I have exported a Job created with TIS 4.2.2|r63143.
When I deployed my Job inside my server and when I launch it ( with a cron tasks ) I have this error :
Exception in thread "main" java.lang.NoClassDefFoundError: routines/system/api/TalendJob
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Caused by: java.lang.ClassNotFoundException: routines.system.api.TalendJob
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 12 more
Could not find the main class: projet_albin.my_job.my_job. Program will exit.

That's very strange because when I make the same export with a TOS version, I have no problem when I execute my Job.
Some idea ?
Thanks.

Re: [resolved] Error Could not find the main class

Anonymous — Fri, 05 Aug 2011 13:39:01 GMT

Hi albin
The job is not exported completely, some of class file are missing. To check if the job runs fine in a TIS studio and try to regenerate it again.
Best regards
Shong

Re: [resolved] Error Could not find the main class

dpdfr_ag — Fri, 05 Aug 2011 13:47:50 GMT

Hi Shong,
Thanks for your answer.
My Job works perfectly inside TIS Studio.

I tried to export it a several time but the problem persits.

Re: [resolved] Error Could not find the main class

Anonymous — Fri, 05 Aug 2011 14:05:33 GMT

Hi alin
Ok, please report a support ticket and send us the job item, so that our support team can investigate it further.
Best regards
Shong

Re: [resolved] Error Could not find the main class

Anonymous — Fri, 05 Aug 2011 14:53:30 GMT

Hi all,
there is a bug in the 4.2.2 job's extraction !!
If you choose only Unix version, the classpath.jar is incorrect !!
To by pass the pb you can generate both (win + unix) then the classpath.jar generated will be ok !!!!
Regards,
etl_talend

Re: [resolved] Error Could not find the main class

dpdfr_ag — Fri, 05 Aug 2011 15:10:14 GMT

I confirm.
I have export my Job with both (win + unix ) and my Job work fine now into my Unix server.
Thanks a lot for your answers.

Re: [resolved] Error Could not find the main class

Anonymous — Thu, 01 Sep 2011 12:18:50 GMT

Am trying to export a job but files are missing???
I tried to export it as UNIX project, Windows or Any but I still get the same issue!!!!
Is there a way to export only the files you need including java files?????????????
Thank you in advance,
Bujar

Re: [resolved] Error Could not find the main class

Anonymous — Mon, 19 Sep 2011 15:56:43 GMT

Hello,
It looks the bug is still present in the TOS version 4.2.3...
Is a patch planned in a near future?

Re: [resolved] Error Could not find the main class

benu — Thu, 13 Oct 2011 19:24:40 GMT

Still present in v4.2.3 r67267, and I'm REALLY glad I found this post - I was going crazy! Using "All" for "Shell Launcher" option solved the problem.

Re: [resolved] Error Could not find the main class

Anonymous — Fri, 21 Oct 2011 19:26:44 GMT

hi, i had the same problem and is a problem with the 4.2.2 job's extraction. I only had to changed the version. very good post.
tks

Re: [resolved] Error Could not find the main class

Anonymous — Fri, 18 Nov 2011 14:49:45 GMT

Same here (on 4.2.3) - thanks for the post. I thought I'm going crazy.
I had it exported once and it worked while later exports keep erroring out. The difference was I was only selecting the Unix launcher...

Re: [resolved] Error Could not find the main class

_AnonymousUser — Thu, 12 Apr 2012 14:36:05 GMT

Hi albin
The job is not exported completely, some of class file are missing. To check if the job runs fine in a TIS studio and try to regenerate it again.
Best regards
Shong

Thats all very nice and dandy but what do I do if I don't have TIS???

Re: [resolved] Error Could not find the main class

_AnonymousUser — Tue, 05 Jun 2012 16:38:47 GMT

Same problem on 5.0.2 under windows XP.
Using "All" for "Shell Launcher" option works too on this version, thanks!

Re: [resolved] Error Could not find the main class

Anonymous — Mon, 21 Jan 2013 14:18:53 GMT

Here's Every one's export functionality is working in one or the other way but it was not working in my system
Problem: I created a job and was working perfect but when i am exporting the same job main class is missing in folder. I followed the suggestions who all mentioned above {using "All" for Shell Launcher and by windows too} but still it is not working. I request to help and im new to talend.
I am using Talend 5.2.0 on windows 7 machine.
Thanks a Lot in Advance.
Regards
Naveen

Re: [resolved] Error Could not find the main class

Anonymous — Tue, 15 Apr 2014 12:26:11 GMT

Here's Every one's export functionality is working in one or the other way but it was not working in my system
Problem: I created a job and was working perfect but when i am exporting the same job main class is missing in folder. I followed the suggestions who all mentioned above {using "All" for Shell Launcher and by windows too} but still it is not working. I request to help and im new to talend.
I am using Talend 5.2.0 on windows 7 machine.
Thanks a Lot in Advance.
Regards
Naveen

Strange, not working for me too, i am using talend 5.4 on windows 7 , tried both way only windows and all.

Re: [resolved] Error Could not find the main class

Anonymous — Wed, 16 Apr 2014 03:56:16 GMT

Hi shripatel
This topic is a little old, for better following up your problem, I would suggest you to open a new topic for your problem with details.
Shong

Re: [resolved] Error Could not find the main class

Anonymous — Mon, 22 Aug 2016 07:47:37 GMT

hi
I am using Talend Big Data 6.2 tool and exporting job as BuildJob->Build Type: OSGI Bundle for ESB. Now when I am using java code to call this jar file, it is still showing error as :
Exception in thread "main" java.lang.NoClassDefFoundError: routines/system/api/TalendJob
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at TestClassTalendJar.main(TestClassTalendJar.java:5)
Caused by: java.lang.ClassNotFoundException: routines.system.api.TalendJob
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 13 more
Please suggest me the way. We are running behind of time and not able to progress a single steps ahead.
Prakash

Re: [resolved] Error Could not find the main class

Anonymous — Mon, 22 Aug 2016 08:40:58 GMT

Hi Prakash,
We have replied to your another topic: https://community.talend.com/t5/Design-and-Development/Talend-Job-export-and-execution-problem/td-p/63955.
Could you please take a look at it?
Best regards
Sabrina