microsoft / microsoft/vscode-java-debug

Could not find or load main class & ERROR: transport error 103: invalid port number specified

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ai-triaged question
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TypeScript
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Avg merge
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Merged PRs (30d)
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Description

Error: Could not find or load main class
Caused by: java.lang.ClassNotFoundException

If I take the java command and directly run it, I got these errors

Image

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the Java command shown in the report and compare it with the launch configuration that produced the errors. Done means identifying why the main class cannot be loaded and why the transport port is invalid, then confirming a corrected debug launch.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, vscode
Domain
devtools
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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