Use helm in specific modes and not for other buffers in different mode

Question

I recently started using lsp-java and one of the packages it suggests is helm. The suggested changes to the .emacs file to do this is:

(use-package helm-lsp)
(use-package helm
    :config (helm-mode))

This obviously works to start helm mode.

This issue I have is if I open another buffer in another mode (say shell in shell-mode) it continues to use helm which I really don't like.

I have tried adding the helm-lsp and helm mode initializing into a function which in turn is loaded via a java-mode-hook:

(defun init-lsp-java-stuff ()
       (interactive)
       ...
       (use-package helm-lsp)
       (use-package helm
           :config (helm-mode))
       ...
)
...

(add-hook 'java-mode-hook 'init-lsp-java-stuff)

This works if I never enter java mode, but still after entering java mode all my other buffers have helm loaded.

What I want is for helm to ONLY be loaded for java-mode buffers, and NOT be loaded for buffers in any other mode.

Answer 1

Don't call helm-mode at all. Helm-mode does not introduce anything for lsp-java per se but IMO improves general emacs usability. You could use helm-lsp function without having helm-mode enabled.