Document how to start the lsp java server

[naclander]

Similar to #1 I think we should document how to start the language server from within emacs.

I have the server downloaded and in the correct location, and I can start it manually, but I am unsure how to do this within emacs using lsp-mode and lsp-java.

[naclander]

It seems that the java lsp server does start sometimes. Its hard for me to diagnose why it starts some times and not others.

I like the path that meghanada took and had all server interaction logged to a separate buffer.

[vibhavp]

lsp-mode should start the language server automatically. Is that not happening?

[vibhavp]

Also, I like the idea to log all server interaction. Structured logging for requests and response might be a feature in lsp-mode at some point.

[naclander]

Actually I seem to sometimes get a prompt to start the lsp-server, but depending on how I open the buffer it sometimes doesn't get prompted ( for example, if I open a file via neotree ).

This might be a problem with lsp-mode and not lsp-java, but it would still be nice if I had a command to force the java lsp server to start ( and maybe restart and kill it as well ).

[yyoncho]

In order to force lsp-java server to start, you could call lsp-java-enable manually. You could restart the workspace with lsp-restart-workspace.

[ivanhjc]

In order to force lsp-java server to start, you could call lsp-java-enable manually. You could restart the workspace with lsp-restart-workspace.

Is lsp-java-enable unavailable now? I'm using lsp-java 20191115.1712 and it's not found when I try to call it with M-x. I tried lsp-restart-workspace and it let me select a workspace to restart while there's no matching workspace. I also tried to add a workspace by calling lsp-workspace-folders-add but still no good. As of now what's the proper way to start the server from within Emacs?

[yyoncho]

Use M-x lsp. You may consult with lsp-mode's documentation.