VS Code: Import Java projects as part of the prebuild

[OLibutzki]

Is your feature request related to a problem? Please describe

Currently Java projects are imported whenever I open a Gitpod workspace. That takes some time and leads to a delay until I can start coding. This issue can be reprduced using the spring-petclinic example.

Here is a little video demonstrating the current behaviour:

gitpod-io_spring-petclinic-Java-import.mp4

After about 30 seconds the IDE is ready including the extensions...
It takes another 14 seconds until the Java project is imported. Please keep in mind that the petclinic is a small project. Bigger projects (like Maven Multi-Module projects) take more time to be imported into VS Code.

Describe the behaviour you'd like

It would be great if the Java project import could be moved into the prebuild phase.

Describe alternatives you've considered

Using the JetBrains stack might be an alternative, but I have not tried it yet.

Additional context

//cc @svenefftinge the result of our conversation today

[OLibutzki]

I assume that it's an issue how vscode-java works...

Every Reload window leads to a reimport of the Java projects.

[axonasif]

Hey @OLibutzki, thanks for rising this. Does #10185 seem related to you?

[OLibutzki]

From a user's point of view it seems to be related, but I doubt that it's related from a technical point of view as IntelliJ and the RedHat VS Code implementations are completely different.

[akosyakov]

Thank you for the issue. It is an interesting idea. @fbricon I wonder is there some way to prerun java LS on CI that it opens the project quicker on the startup in VS Code?

[akosyakov]

I opened the issue in VS Code Java: redhat-developer/vscode-java#2724

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.