--enable-preview

[axieax]

LSP client configuration

https://github.com/axieax/dotconfig/blob/main/nvim/lua/lsp/utils.lua#L22-L80

Eclipse.jdt.ls version

latest

Steps to Reproduce

Empty Java project with no config files
:Telescope dap configurations
Select main class
Error appears when run

Expected Result

Running dap configurations successfully brings up the main classes - where selecting one would normally work.

Actual Result

For some of my Java projects, the main functions cannot be run with DAP properly due to the missing --enable-preview argument (barebones Java repo with no config file - works fine in VSCode).

Error: LinkageError occurred while loading main class random.Game
        java.lang.UnsupportedClassVersionError:
Preview features are not enabled for random/Game (classfile version 61.65535). Try running with '--enable-preview'

[Process exited 1]

[mfussenegger]

For some of my Java projects, the main functions cannot be run with DAP properly due to the missing --enable-preview argument (barebones Java repo with no config file - works fine in VSCode).

Not sure I follow. Does the project use preview features?

[axieax]

I don't think so, but it seemed to compile with --enable-preview by default, so it's expected to run with --enable-preview as well.

[mfussenegger]

but it seemed to compile with --enable-preview by default

This would have to be configured in the project configuration.

Do you have a sample project where I can reproduce this?

[axieax]

Sure! In VSCode, create a new sample Java project

1. Command > Java: Create Java Project
2. Select No Build Tools

Navigating to the default App.java with VSCode, the main function can be run by selecting "run".

Navigating to the same App.java with Neovim and trying to run it with Dap Configurations (which automatically detects it), will result in the --enable-preview message from before.

Hope this helps! I'm not too sure how to configure it in the project configuration.

[mfussenegger]

Can you try with #165 ?

[axieax]

Works like a charm 😁 appreciate the quick fix!!