A command without context is not very useful. If anyone wants to run LanguageTool locally, I suggest reading the official documentation page: https://dev.languagetool.org/http-server

Their recommended process is :

1. Install fasttext (it's an official Debian package, but you have to compile it on Windows).

2. Download and uncompress the LanguageTool release.

3. Create a config file.

4. Launch the server with the java command (of course, a JRE must be installed).

5. Connect to the API, e.g. with the browser extension.

Running a ready-made docker image replaces steps 1-4 and removes the need to install Java globally. Some will prefer it this way.