topic Re: An error occurred (org/eclipse/jdt/core/javacore) in Talend Studio

An error occurred (org/eclipse/jdt/core/javacore)

RAJ6 — Thu, 27 Jul 2017 15:22:00 GMT

HI Talend Folks,

When i open talend tool. I am getting error message. could please tell me. how to solve this issues without uninstall?

Error message:

An error occurred (org/eclipse/jdt/core/javacore)

java.lang.NoClassDefFoundError: org/eclipse/jdt/core/JavaCore
at org.talend.commons.utils.generation.JavaUtils.applyCompilerCompliance(JavaUtils.java:257)
at org.talend.commons.utils.generation.JavaUtils.updateProjectJavaVersion(JavaUtils.java:238)
at org.talend.core.repository.model.ProxyRepositoryFactory.logOnProject(ProxyRepositoryFactory.java:1935)
at org.talend.repository.ui.login.LoginHelper$1.run(LoginHelper.java:441)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)
Caused by: java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.jdt.core (641).
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:116)
at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:531)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:324)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:327)
at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:36)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:398)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:352)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:344)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:160)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 5 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.jdt.core.JavaCore.start() of bundle org.eclipse.jdt.core.
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:792)
at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:721)
at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:941)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:318)
at org.eclipse.osgi.container.Module.doStart(Module.java:571)
at org.eclipse.osgi.container.Module.start(Module.java:439)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:454)
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
... 14 more
Caused by: org.eclipse.core.internal.resources.ResourceException: Could not read metadata for 'C:\Users\GISPLBL-04\workspace\.metadata\.plugins\org.eclipse.core.resources\.root\.indexes\properties.index'. Unexpected version: 0.
at org.eclipse.core.internal.localstore.Bucket.load(Bucket.java:303)
at org.eclipse.core.internal.properties.PropertyBucket.load(PropertyBucket.java:258)
at org.eclipse.core.internal.localstore.Bucket.load(Bucket.java:274)
at org.eclipse.core.internal.localstore.BucketTree.loadBucketFor(BucketTree.java:115)
at org.eclipse.core.internal.properties.PropertyManager2.getProperty(PropertyManager2.java:134)
at org.eclipse.core.internal.resources.Resource.getPersistentProperty(Resource.java:1205)
at org.eclipse.jdt.internal.core.JavaModelManager.loadVariablesAndContainers(JavaModelManager.java:3265)
at org.eclipse.jdt.internal.core.JavaModelManager.startup(JavaModelManager.java:5036)
at org.eclipse.jdt.core.JavaCore.start(JavaCore.java:5651)
at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:771)
at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:764)
... 21 more

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Fri, 28 Jul 2017 03:29:26 GMT

Hello,

Is it Ok with new workspace? Did you get this error when you start the studio with new project?

Best regards

Sabrina

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Tue, 05 Sep 2017 07:32:05 GMT

Create a new workspace.

Import the project from the workspace and check it.

If you face the same issue import the project without .metadata,.JETEmitters,.Java.

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Tue, 05 Sep 2017 09:15:22 GMT

Hello ,

Thanks for sharing your solution here.

Best regards

Sabrina

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Mon, 29 Jan 2018 04:53:30 GMT

Local Project -java when open An error occurre(org/eclipse/jdt/core/javacore)

After creating a new project or Import a demo project same error occurre.

Plz provide any solution ....

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Tue, 30 Jan 2018 08:33:11 GMT

Hello,

@ksingh wrote:

Hi

Local Project -java when open An error occurre(org/eclipse/jdt/core/javacore)

After creating a new project or Import a demo project same error occurre.

Plz provide any solution ....

Can you please clarify in which Talend version/edition you are? Have you tried to re-install your studio completely to see if it works well?

Best regards

Sabrina

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Thu, 01 Feb 2018 04:21:55 GMT

thank u. now it is working. my Talend is 6.2. am researt my laptop after
that its working.

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Thu, 01 Feb 2018 07:01:18 GMT

Dear Folks

thanks

when am open Talend that issue was am facing. that time my system is updating after sometime my system restart this problem is automatically solve.

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Thu, 01 Feb 2018 09:25:44 GMT

Hello,

Great your issue has been fixed.

Best regards

Sabrina

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Wed, 11 Apr 2018 13:10:21 GMT

Hi! I faced the exact same problem, but managed to fix by clicking on "manage connection" and reseting the workspace folder.
Just wanted do leave here this possible solution as well.

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Wed, 11 Apr 2018 14:13:03 GMT

hello, check your java connection is proper. Stop or complete install windows updating if its in progress. restart your system.

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Thu, 13 Sep 2018 12:24:52 GMT

Just remove folder
workspace\.metadata\.plugins\org.eclipse.core.resources\.root\.indexes
and restart TOS.
Please let me know if you have fixed the problem.
Best regards

Don't forget to give Kudos

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Mon, 10 Dec 2018 12:33:02 GMT

Hello everybody,

Removing

workspace\.metadata\.plugins\org.eclipse.core.resources\.root\.indexes

worked for me.

Thank you ankit03jangra.

)

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Tue, 11 Dec 2018 11:11:39 GMT

Thank you, I was able to solve the problem.

Re: An error occurred (org/eclipse/jdt/core/javacore)

Anonymous — Tue, 16 Jul 2019 19:21:58 GMT

Worked for me

Re: An error occurred (org/eclipse/jdt/core/javacore)

sarath2 — Mon, 16 Sep 2019 19:02:29 GMT

This worked for me.
Thanks,
Sarath

Re: An error occurred (org/eclipse/jdt/core/javacore)

avinashbasetty — Fri, 24 Apr 2020 10:00:53 GMT

Thank you Ankit,

Remove the index folder helps to solve the issue.

C:\Talend-Studio-20180411_1414-V7.0.1\workspace\.metadata\.plugins\org.eclipse.core.resources\.root\.indexes

Regards,

Avinash.B