Feature request: Bytecode debugging #580

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1. lab313ru commented on Feb 4, 2025

   

   Vladimir Kononovich (lab313ru)

   on Feb 4, 2025

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   As I know Java Language Server already supports instruction (not lines) breakpoints.
2. github-actions commented on Nov 14, 2025

   

   github-actionsbot

   on Nov 14, 2025 – with GitHub Actions

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   Hi Vladimir Kononovich (@lab313ru), 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.

   Suggestion

   At present the VS Code Java Debugger only supports source-level debugging, so setting breakpoints directly in bytecode isn’t available. As a workaround:

   • Install the Java Decompiler extension to convert .class files back into Java source and then set breakpoints in the decompiled code.
     • Extension: vscjava.vscode-java-decompiler
     • URL: https://marketplace.visualstudio.com/items?itemName=vscjava.vscode-java-decompiler

   Next Steps

   • If you’d like native bytecode-level debugging support, please open a feature request in the Java Debug repo:
     • https://github.com/microsoft/vscode-java-debug/issues/new

   Labels

   enhancement

   Duplicates

   None found.

   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!
3. github-actions

   added

   ai-triaged

   enhancement

   on Nov 14, 2025