No delegateCommandHandler for vscode.java.resolveMainMethod

[devhamzat]

i installed java debugger extension but i am getting "No delegateCommandHandler for vscode.java.resolveMainMethod" error and after multiple restarts still no solution.
os:windows

[github-actions]

Hi hamzat (@devhamzat), 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.

Possible Solutions

• Update your Java extensions to compatible, latest versions:

  • Ensure Language Support for Java™ by Red Hat and Debugger for Java are both installed and up-to-date. In issue #1342, the fix was to bump Red Hat’s Java extension beyond v0.64.1 to match the debugger version.

• Clean & reload the Java language server:

  1. Open Command Palette (⇧⌘P / Ctrl+Shift+P).
  2. Run Java: Clean Java Language Server Workspace and choose Reload and Delete.

• Verify your launch.json is targeting a valid mainClass and that your java.home / JAVA_HOME settings point to a supported JDK.

Duplicate Issue

• No delegateCommandHandler for vscode.java.resolveMainMethod #1342

Other references with low confidence

• No delegateCommandHandler for vscode.java.resolveMainMethod #1308 – No delegateCommandHandler for vscode.java.resolveMainMethod
  Same symptom on Windows 11, but no resolution provided.
  No delegateCommandHandler for vscode.java.resolveMainMethod #1308

• Failed to run command  #969 – Failed to run command (‘vscode_delegate_cmd*’)
  A similar delegateCommandHandler error when organizing imports.
  Failed to run command  #969

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!

[wenytang-ms]

hamzat (@devhamzat)
can you please

1. uninstall the java pack extension,
2. kill all the openjdk process in your os
3. reinstall the java pack extension,
4. open the project and trigger command clean java language server workspace and click the reload in the right bottom corner button.
   then please share the status, thanks

[github-actions]

This issue has been closed automatically because it needs more information and has not had recent activity. Please reach out if you have or find the answers we need so that we can investigate further.