topic Re: Error: Could not find or load main class. when running a Talend Job in Installing and Upgrading

Error: Could not find or load main class. when running a Talend Job

Anonymous — Sat, 16 Nov 2024 11:43:22 GMT

I have the same issue with our dev environment. I get error Error: Could not find or load main class. Take note, that it works in our pre-prod environment and setup is identical.
Things to note:
1. Talend is installed in linux machine with no spaces in directory path at all.
2. Talend is root user so it has access to all files.
3. if we contact support most likely it will send us through this forum.
Thanks,
David

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Wed, 12 Mar 2014 18:25:10 GMT

Where do you get this error? On your studio or on the Jobserver?
If you have a support subscription you should use it!

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Thu, 13 Mar 2014 08:11:23 GMT

Hi,
Make sure your jdk environment is totally correct.(java -version classpath=.;%JAVA_HOME%\jre\lib\rt.jar;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar .
Does this issue appear when run a specific job or all jobs? or server not studio? Please give us more information about your current job situation.
Best regards
Sabrina

Re: Error: Could not find or load main class. when running a Talend Job

_AnonymousUser — Thu, 22 May 2014 10:57:57 GMT

I have the same issue with our dev environment. I get error "Error: Could not find or load main class."
I would like to schedule my job but this issue appears when running the exported job.
T need your help please.

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Thu, 22 May 2014 11:04:01 GMT

Same as asked previously by xdshi and jlolling, we need more information about your setup and environment.
Confirm you made the checks suggested by xdshi above.
what version of talend do you have? do you get it when running the job within the studio? have you exported all dependencies you needed?
Provide as much information as you can.

Re: Error: Could not find or load main class. when running a Talend Job

_AnonymousUser — Thu, 22 May 2014 11:27:34 GMT

Firt I confirm that i made the checks suggested by xdshi.
The version of talend is:
Version: 5.4.1
Build id: r111943-20131212-1133
I don't get this issue when running the job on the studio, it works very well. But after exporting the job and all the dependencies i tried to run the batch file but it doesn't work.

Microsoft Windows
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\hh>java -version
java version "1.8.0_05"
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)
C:\Users\hh>F:\Tranfert\transfert_0.1\transfert_0.1\transfert\transfert_run.bat
C:\Users\hh>F:
F:\>cd F:\Tranfert\transfert_0.1\transfert_0.1\transfert\
F:\Tranfert\transfert_0.1\transfert_0.1\transfert>java -Xms256M -Xmx1024M -cp cl
asspath.jar; optimbo.transfert_0_1.transfert --context=Default
Error: Could not find or load main class optimbo.transfert_0_1.transfert

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Fri, 23 May 2014 08:30:14 GMT

Hi,
So far, there is no support for Java 8 in talend
Please have a look at KB article about TalendHelpCenter:https://help.talend.com/display/KB/Java+8+Support.
Could you please downgrade your jdk 1.8 into jdk 1.7 or 1.6 to see if this issue repro?
Best regards
Sabrina

Re: Error: Could not find or load main class. when running a Talend Job

_AnonymousUser — Fri, 23 May 2014 12:48:05 GMT

Hi,
I downgraded java 1.8 into 1.6 anad i got this error:

Microsoft Windows
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\niba>F:\Tranfert\Direct_debit_transfert_Copy_0.1\Direct_debit_transfert
_Copy_0.1\Direct_debit_transfert_Copy\Direct_debit_transfert_Copy_run.bat
C:\Users\niba>F:
F:\>cd F:\Tranfert\Direct_debit_transfert_Copy_0.1\Direct_debit_transfert_Copy_0
.1\Direct_debit_transfert_Copy\
F:\Tranfert\Direct_debit_transfert_Copy_0.1\Direct_debit_transfert_Copy_0.1\Dire
ct_debit_transfert_Copy>java -Xms256M -Xmx1024M -cp classpath.jar; optimbo.direc
t_debit_transfert_copy_0_1.Direct_debit_transfert_Copy --context=Default
Exception in thread "main" java.lang.NoClassDefFoundError: optimbo/direct_debit_
transfert_copy_0_1/Direct_debit_transfert_Copy
Caused by: java.lang.ClassNotFoundException: optimbo.direct_debit_transfert_copy
_0_1.Direct_debit_transfert_Copy
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: optimbo.direct_debit_transfert_copy_0_1.Direct_de
bit_transfert_Copy. Program will exit.
F:\Tranfert\Direct_debit_transfert_Copy_0.1\Direct_debit_transfert_Copy_0.1\Direct_debit_transfert_Copy>

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Mon, 26 May 2014 04:35:51 GMT

Hi,
Make sure your jdk version is jdk 1.6
C:\Users\hh>java -version
java version "1.6"
Is there any extra space or illegal character in your installation path? Have you already checked online document TalendHelpCenter:Installation+requirements to set your Environment variable?
Best regards
Sabrina

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Sat, 13 Sep 2014 12:40:18 GMT

hi i have the same problem , and i run the command that you suggested
# java -version classpath=.;%JAVA_HOME%\jre\lib\rt.jar;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar;
java version "1.7.0_05"
Java(TM) SE Runtime Environment (build 1.7.0_05-b05)
Java HotSpot(TM) Client VM (build 23.1-b03, mixed mode, sharing)
bash: fg: %JAVA_HOME%jrelibrt.jar: no such job
bash: fg: %JAVA_HOME%libdt.jar: no such job
bash: fg: %JAVA_HOME%libtools.jar: no such job
You have new mail in /var/spool/mail/root
#
what i need to do in my case?
thanks a lot,
Shani.

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Mon, 15 Sep 2014 04:50:14 GMT

Hi shanshan,
Here is a response in your another topic:http://www.talendforge.org/forum/viewtopic.php?id=38274
Could you please have a look at it?
Best regards
Sabrina

Re: Error: Could not find or load main class. when running a Talend Job

_AnonymousUser — Mon, 20 Oct 2014 10:16:58 GMT

Hi,
It also give me this error when running job. How can I get jdk 1.6? I cannot find it in google.
Please help.
Lex

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Mon, 20 Oct 2014 10:21:45 GMT

Hi Lex,
You can get oracle JDK from http://www.oracle.com/technetwork/java/javase/downloads/index.html.
Best regards
Sabrina

Re: Error: Could not find or load main class. when running a Talend Job

_AnonymousUser — Thu, 13 Nov 2014 12:42:37 GMT

Hi,
I am getting this error for all jobs in talend studio whenever I tries to run any job.
I am using java 7 version.
"Error: Could not find or load main class "

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Fri, 14 Nov 2014 02:54:46 GMT

Hi Smita B,

The error "Could not find or load main class" is usually caused the blank space in the installation path. Could you please take a look at it?

Best regards
Sabrina

Re: Error: Could not find or load main class. when running a Talend Job

Spretorius — Thu, 19 Feb 2015 07:08:38 GMT

Hi
Would just like to find out if this has been resolved, before logging a bug.
Getting the same "Could not find or load main class" when running a job on TAC, as a schedule on a job server. It does not happen all the time only at random times. All jobs runs fine on studio java is setup right and no spaces in installation directory.
Regards,
Stephan

Re: Error: Could not find or load main class. when running a Talend Job

_AnonymousUser — Mon, 23 Feb 2015 02:27:35 GMT

Hi,
Running into the same problem as above: 'Error: Could not find or load main class'
I have Java 1.8 and to run Talend Studio I'm using this hack:
I runs the studio, I'm able to connect to Salesforce source and import objects. The problem starts when I try to run the job (inside Talend Studio).
Any suggestions? Unfortunatelly I can't downgrade java.
Regards,
Daniel

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Mon, 23 Feb 2015 22:27:04 GMT

slaugHi,
Running into the same problem as above: 'Error: Could not find or load main class'
I have Java 1.8 and to run Talend Studio I'm using this hack:
I runs the studio, I'm able to connect to Salesforce source and import objects. The problem starts when I try to run the job (inside Talend Studio).
Any suggestions? Unfortunatelly I can't downgrade java.
Regards,
Daniel

Just to add more details, this is how I run Talend Studio:
C:\TOS\TOS_DI-Win32-20141207_1530-V5.6.1\TOS_DI-win32-x86.exe -vm "C:\Program Files (x86)\Java\jre1.7.0_51\bin"
So you can see the installation path and java vm which I am using.

Re: Error: Could not find or load main class. when running a Talend Job

a_vlad — Wed, 29 Apr 2015 12:37:18 GMT

Too many time gone, but still interesting
I have this error, when generate Job in folder outside Open Studio folders, like:
The same Job (manual copy) in:
- /Volumes/VM/TOS/OpenStudioDI_xxx/Jobs - work fine
- /Volumes/VM/Data/Jobs - file, with error - Error: Could not find or load main class.
no change in PATH or anything also,
Java in PATH, JRE also

Re: Error: Could not find or load main class. when running a Talend Job

Anonymous — Thu, 30 Apr 2015 09:06:08 GMT

Hi,
- /Volumes/VM/TOS/OpenStudioDI_xxx/Jobs - work fine
- /Volumes/VM/Data/Jobs - file, with error - Error: Could not find or load main class.
The blank space in the installation path probably cause the error "Could not find or load main class".
Best regards
Sabrina