topic Re: Could not find or load main class in Installing and Upgrading

Could not find or load main class

Anonymous — Sat, 16 Nov 2024 09:26:00 GMT

I have already tried the solutions recommended by other posts on the community:

- install path with no spaces

- running on java 1.8_77

- cleaned up work space

- fresh install of talend

None of the above have resolved my issue. I am running talend on my local machine

i am running talend studio for big data 6.3.0

with

java jdk is 1.8_77

talend path is

/Users/me/Documents/Software/TOS_BD-20161026_1219-V6.3.0/TOS_BD-macosx-cocoa

can some one help as i have exhausted all possible solutions.

let me know if any other information can be provided

Re: Could not find or load main class

Anonymous — Tue, 08 Aug 2017 10:16:16 GMT

Hi,

What's your OS? Does this issue repro on all jobs or a specific job on big data 6.3.0? Does this issue repro on other build version? V 6.4? Is your java environment set correctly?

Best regards

Sabrina

Re: Could not find or load main class

Anonymous — Tue, 08 Aug 2017 10:19:56 GMT

im running on mac os seirra 64 bit.

the issue if affecting all jobs, i cannot even just run a blank talend job.

i have set my paths as follows

JDK:

export JAVA_HOME=/Library/Java/JavaVirtualMachines/Library/Java/JavaVirtualMachines/jdk1.8.0_77.jdk/Contents/Home

and in talend studio my JRE library points to :

/Library/Java/JavaVirtualMachines/jdk1.8.0_77.jdk/Contents/Home

currently i am only using talend studio big data V6.3 and had no issue till today, even earlier my setup was working fine, but suddenly stopped working.

Re: Could not find or load main class

Anonymous — Tue, 08 Aug 2017 10:31:02 GMT

Hi,

Is there any more error message in log? Which is located in <Talend Studio installation path>/workspace/.metadata/.log

Is it a random issue?

Best regards

Sabrina

Re: Could not find or load main class

Anonymous — Tue, 08 Aug 2017 10:35:08 GMT

I cant find the /.metadata/.log path in the workspace folder?

Re: Could not find or load main class

Anonymous — Tue, 08 Aug 2017 10:41:46 GMT

this is my folder set up

Screen Shot 2017-08-08 at 10.40.15.png

Re: Could not find or load main class

Anonymous — Wed, 09 Aug 2017 03:52:44 GMT

Hello,

Is there any log under your configuration folder?

Best regards

Sabrina

Re: Could not find or load main class

Anonymous — Wed, 09 Aug 2017 09:28:00 GMT

no nothing under there either. is it created by default or do i have to set up in Talend studio preferences to make a log location??

Screen Shot 2017-08-09 at 09.26.43.png

Re: Could not find or load main class

Anonymous — Wed, 09 Aug 2017 10:03:39 GMT

Hi,

Can you start up your studio successfully without error? Does this issue only repro when build a job? Could you please go to “Window > Show view > General > Error Log” to see if there is any error message?

Best regards

Sabrina

Re: Could not find or load main class

Anonymous — Wed, 09 Aug 2017 11:00:19 GMT

i am running in just the studio which indeed does start up without any errors . I am just running it in studio not building it.

these are the following log error i get :

eclipse.buildId=unknown
java.version=1.8.0_77
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_GB
Framework arguments: -keyring /Users/joeldasari/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -keyring /Users/joeldasari/.eclipse_keyring -showlocation

org.talend.platform.logging
Info
Wed Aug 09 10:56:07 BST 2017
2017-08-09 10:56:07,201 INFO org.eclipse.m2e.core.internal.lifecyclemapping.LifecycleMappingFactory - Using NULL lifecycle mapping for MavenProject: org.talend.master.local:code.Master:6.3.0 @ /Users/joeldasari/Documents/Software/TOS_BD-20161026_1219-V6.3.0/workspace/.Java/pom.xml.
-----------------------------

org.talend.platform.logging
Info
Wed Aug 09 10:56:06 BST 2017
2017-08-09 10:56:06,657 INFO org.talend.designer.core.runprocess.Processor - Command line: java -Xms256M -Xmx1024M -Dfile.encoding=UTF-8 -cp /Users/joeldasari/Documents/Software/TOS_BD-20161026_1219-V6.3.0/workspace/.Java/target/classes:.:/Users/joeldasari/Documents/Software/TOS_BD-20161026_1219-V6.3.0/workspace/.Java/lib/dom4j-1.6.1.jar:/Users/joeldasari/Documents/Software/TOS_BD-20161026_1219-V6.3.0/workspace/.Java/lib/log4j-1.2.16.jar: local.test_0_1.test --context=Default --stat_port=3585
-----------------------------

org.talend.platform.logging
Info
Wed Aug 09 10:56:06 BST 2017
2017-08-09 10:56:06,240 INFO org.eclipse.m2e.core.internal.lifecyclemapping.LifecycleMappingFactory - Using NULL lifecycle mapping for MavenProject: org.talend.master.local:code.Master:6.3.0 @ /Users/joeldasari/Documents/Software/TOS_BD-20161026_1219-V6.3.0/workspace/.Java/pom.xml.

Re: Could not find or load main class

Anonymous — Wed, 09 Aug 2017 11:57:26 GMT

Solution FOUND !!

It seems i have added and extra java library in the extensions folder where the java install path is. somehow this effected talend although im not sure why. i have now removed this extra library and it works again.

Re: Could not find or load main class

Anonymous — Wed, 09 Aug 2017 12:04:34 GMT

just to add to the solution, Any extra error or hints can be found by changing from integration mode (top right icon ), into java mode by clicking on the little icon at the top to change modes

Screen Shot 2017-08-09 at 12.03.50.png

Re: Could not find or load main class

Anonymous — Thu, 10 Aug 2017 03:35:28 GMT

Hello,

Great this issue has been fixed. Thanks for posting your issue here.

Best regards

Sabrina

Re: Could not find or load main class

Anonymous — Mon, 13 Nov 2017 09:06:00 GMT

You could use java 9 by adding the line

--add-modules=ALL-SYSTEM

to TOS_DI-20170623_1246-V6.4.1\plugins\org.talend.rcp_6.4.1.20170623_1246\eclipse.ini

-vmargs
--add-modules=ALL-SYSTEM

and to TOS_DI-win-x86_64.ini

-Dosgi.requiredJavaVersion=1.8
--add-modules=ALL-SYSTEM

Re: Could not find or load main class

Anonymous — Mon, 29 Jan 2018 15:52:18 GMT

please, can you tell me in detail how to solve this error?!!!

where is extensions folder? which libraries i need to remove ??

thanks

Re: Could not find or load main class

Anonymous — Fri, 25 May 2018 15:49:42 GMT

Hi All,

I have an issue "could not find or load the main class" when I run the job from ide, I have instructed to check java installation path and environment setup everything, I have no idea to resolve this,

I have checked my installation path, there are no blank spaces,

this is the below environment setup,

JAVA_HOME - C:\Program Files\Java\jdk1.8.0_162\

JRE_HOME- C:\Program Files\Java\jre1.8.0_162\

TALEND_HOME -C:/Talend/6.4.1

path - C:\Program Files\Java\jdk1.8.0_162\bin

operating system - Windows 8.1 or Windows Server 2012 R2

can you have an alternative way to resolve this?

Re: Could not find or load main class

Anonymous — Fri, 25 May 2018 15:54:04 GMT

Hi please mention that extensions folder where the java installation path.

Re: Could not find or load main class

Anonymous — Wed, 30 May 2018 04:43:54 GMT

Hello,

Could you ensure JDK bin is included in your PATH environment variable and is being reached?

Best regards

Sabrina

Re: Could not find or load main class

Anonymous — Wed, 30 May 2018 16:04:36 GMT

I have included JDK bin path to PATH variable also but it's not working. Still, maintain the error "
Error: Could not find or load main class" . is there any alternate way to resolving this?

Re: Could not find or load main class

Anonymous — Thu, 31 May 2018 14:36:41 GMT

Hello,

Does this error "Error: Could not find or load main class" repro on all your jobs or a specific one?

We cannot repro this issue on our side. Could you please give us more information about your currrent situation? Which will be helpful for us to address your issue.

Thanks for your time.

Best regards

Sabrina