Can't run the java code #870

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1. Eskibear commented on Jan 5, 2022

   

   Yan Zhang (Eskibear)

   on Jan 5, 2022

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   From the "spinning sync icon" at bottom right corner, it tells that the language server is starting (e.g. importing your project).

   Can you wait a little longer, or check "Language Support for Java" output channel for detailed logs? If you can stably reproduce the error (e.g. spinning forever), please provide a sample project.
2. Yan Zhang (Eskibear)

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   on Jan 5, 2022
3. Yan Zhang (Eskibear)

   self-assigned this

   on Jan 5, 2022
4. hjue commented on Jan 11, 2022

   

   hjue (hjue)

   on Jan 11, 2022

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   dev tools log screenshot

   

   client.log

   {
     message: 'Language Support for Java (Syntax Server) server encountered error: [object Object], Error [ERR_STREAM_DESTROYED]: Cannot call write after a stream was destroyed',
     level: 'error',
     timestamp: '2022-01-11 19:00:50.279'
   }
   {
     message: '[Error - 7:00:50 PM] Connection to server got closed. Server will not be restarted.',
     level: 'info',
     timestamp: '2022-01-11 19:00:50.280'
   }
   
5. no-response

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   on Jan 11, 2022
6. Eskibear commented on Jan 12, 2022

   

   Yan Zhang (Eskibear)

   on Jan 12, 2022

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   Looks like it was working on lightweight mode. Jinbo Wang (@testforstephen) Any idea?
7. github-actions commented on Oct 31, 2025

   

   github-actionsBot

   on Oct 31, 2025 – with GitHub Actions

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   Hi hjue (@hjue), I'm an AI Support assistant here to help with your issue. While the team reviews your request, I wanted to provide some possible tips and documentation that might help you in the meantime.

   It looks like this is a known bug where VS Code’s Java extensions fail to activate (no project detected, “command 'java.debug.runJavaFile' not found”).

   • Duplicate issue:
   • #2267 (“Can’t run the java code” on Mac, same VS Code/extension versions)
   redhat-developer/vscode-java#2267

   You can work around it by:

   • Ensure your java.home is the full JDK path including /Contents/Home:

   "java.home": "/Library/Java/JavaVirtualMachines/microsoft-17.jdk/Contents/Home"

   • Run “Java: Clean the Java language server workspace” from the Command Palette and reload the window.
   • Check the Java Language Server output (View → Output → select Language Support for Java).
   • If you see stream errors, try disabling other extensions (e.g., TabNine) to rule out conflicts.

   Other references with high confidence worth checking:

   • #963 (same “command 'java.debug.runJavaFile' not found” error)
   microsoft/vscode-java-debug#963

   Other references with low confidence

   • #1460 (empty folder, win10, cannot run code; similar symptoms)
   microsoft/vscode-java-debug#1460

   • #1003 (JDK uninstall/reinstall on Windows; code runs in terminal but not in VS Code)
   redhat-developer/vscode-java#1003

   The team will respond to your issue shortly. I hope these suggestions are helpful in the meantime. If this comment helped you, please give it a 👍. If the suggestion was not helpful or incorrect, please give it a 👎. Your feedback helps us improve!
8. github-actions

   added

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   on Oct 31, 2025
9. github-actions

   closed this as not plannedon Oct 31, 2025