Hi @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!

No delegateCommandHandler for vscode.java.resolveMainMethod #1614

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