lsp-java--get-root is called too early

[smarter]

Loading lsp-java causes (lsp-define-stdio-client 'java-mode "java" ...) to be evaluated, one of the argument of this function is (lsp-java--ls-command), which in turn will call (lsp-java--get-root), which will return the current directory at whatever point lsp-java has been loaded, instead of when the lsp-mode has been enabled. If you use emacs in server mode and eagerly load lsp-java in your config, you will likely see Couldn’t find java root, using:/ in your logs.
It seems that lsp-define-stdio-client needs to be changed to take a function that returns the command used for running the server, instead of a list of strings.

[yyoncho]

The issue is no longer reproducible with the latest code since the project roots are specified explicitly and if the project is not under project root the project root directory will default to default-directory. Marking as closed, please reopen it if you are able to hit the issue with the latest code.