Error when I try to run job

[KamilG]

When I try to run job locally I got error: 

Cannot invoke "org.talend.core.runtime.process.ITalendProcessJavaProject.getJavaProject()" because "talendCodeJavaProject" is null

Log: 

java.lang.NullPointerException: Cannot invoke "org.talend.core.runtime.process.ITalendProcessJavaProject.getJavaProject()" because "talendCodeJavaProject" is null

at org.talend.designer.runprocess.java.TalendJavaProjectManager.getTalendCodeJavaProject(TalendJavaProjectManager.java:241)

at org.talend.designer.runprocess.java.TalendJavaProjectManager.getTalendCodeJavaProject(TalendJavaProjectManager.java:206)

at org.talend.designer.runprocess.DefaultRunProcessService.getTalendCodeJavaProject(DefaultRunProcessService.java:777)

at org.talend.designer.runprocess.RunProcessService.getTalendCodeJavaProject(RunProcessService.java:426)

at org.talend.designer.codegen.AbstractRoutineSynchronizer.getAll(AbstractRoutineSynchronizer.java:87)

at org.talend.designer.codegen.AbstractRoutineSynchronizer.getRoutines(AbstractRoutineSynchronizer.java:73)

at org.talend.designer.codegen.JavaRoutineSynchronizer.syncAllRoutines(JavaRoutineSynchronizer.java:57)

at org.talend.core.model.repository.RepositoryManager.syncRoutineAndJoblet(RepositoryManager.java:89)

at org.talend.designer.runprocess.ProcessorUtilities.updateCodeSources(ProcessorUtilities.java:2038)

at org.talend.designer.runprocess.ProcessorUtilities.generateCode(ProcessorUtilities.java:2112)

at org.talend.designer.runprocess.RunProcessContext$2.run(RunProcessContext.java:679)

at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:436)

at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:352)

at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:470)

at org.eclipse.ui.internal.progress.ProgressMonitorJobsDialog.run(ProgressMonitorJobsDialog.java:230)

at org.eclipse.ui.internal.progress.ProgressManager.run(ProgressManager.java:999)

at org.talend.designer.runprocess.RunProcessContext.exec(RunProcessContext.java:626)

at org.talend.designer.runprocess.remote.RunRemoteProcessContext.exec(RunRemoteProcessContext.java:89)

at org.talend.designer.runprocess.ui.ProcessComposite.exec(ProcessComposite.java:1471)

at org.talend.designer.runprocess.ui.views.ProcessView$RunAction.run(ProcessView.java:751)

at org.talend.designer.runprocess.ui.actions.RunProcessAction.run(RunProcessAction.java:63)

at org.talend.designer.core.debug.JobLaunchConfigurationDelegate$1$1.run(JobLaunchConfigurationDelegate.java:98)

at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)

at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)

at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4046)

at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3662)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155)

at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:342)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1046)

at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)

at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:648)

at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:342)

at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:555)

at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)

at org.talend.rcp.intro.Application.start(Application.java:320)

at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:569)

at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:651)

at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588)

at org.eclipse.equinox.launcher.Main.run(Main.java:1459)

at org.eclipse.equinox.launcher.Main.main(Main.java:1432)

[marksouzacosta · Accepted solution]

Hi @KamilG,

We'll need more information about your Job, Talend Studio version and how are you running the job, etc. So far, this is what I got from ChatGPT:

This error in Talend Studio:

Cannot invoke "org.talend.core.runtime.process.ITalendProcessJavaProject.getJavaProject()" because "talendCodeJavaProject" is null

...typically means Talend's internal Java project structure is corrupted or not properly initialized.

✅ Most common causes:

1. Corrupted workspace or project cache.
2. Missing or broken code/routine synchronization.
3. Misconfigured Java environment or path.
4. Failed routine generation or job compile step.

---

✅ Recommended Fixes (Step-by-Step) 🔁 1. Force regenerate project Java code

This often fixes the null pointer issue.

• Go to Project Settings > Build > Java > Rebuild Project
• Or right-click on your job or routines and select Build or Rebuild.

Alternatively:

• From the menu:
  Project > Clean All... > check Delete old code folders > OK.

---

🔄 2. Refresh Talend Project

Sometimes metadata is out-of-sync.

• Right-click your project name in the Repository panel
• Select "Refresh"
• Then try "Rebuild Project" again

---

🧹 3. Clear and regenerate the Talend Java Project

1. Close Talend Studio.
2. Go to your Talend workspace folder, delete the following (backup first if needed):

<YourWorkspace>\.Java\src
<YourWorkspace>\.Java\lib
<YourWorkspace>\.Java\target
<YourWorkspace>\.Java\.settings

1. Reopen Talend Studio.
2. In Talend Studio:
   Project > Clean All > OK

---

🧰 4. Check Java Version & Path

Make sure your system uses Java 17, and there's no override (like _JAVA_OPTIONS) pointing to something else.

Check by running in Command Prompt:

java -version

Should return something like:

openjdk version "17.0.x"

If not, update your JAVA_HOME and Path environment variables.

---

🛠 5. Check for custom routines or invalid scripts

If you recently edited or imported a routine, joblet, or custom code, try:

• Disabling/removing the latest custom routine
• Then clean & rebuild

---

🚨 6. Last Resort: Create a new workspace

If nothing else works:

1. Open Talend Studio
2. Choose File > Switch Workspace > Other…
3. Create/select a new workspace
4. Import your existing project into it

---

Let me know what worked or if you'd like help checking your talend-studio-win-x86_64.ini or environment variables too.