Add java lsp

init.el

@@ -305,6 +305,17 @@
 (use-package lsp-treemacs
   :after (lsp-mode treemacs))
 
+;; Java lsp
+(use-package lsp-java
+  :after lsp-mode
+  :hook (java-mode . lsp)
+  :config
+  (setq lsp-java-server-install-dir (getenv "JDTLS_PATH"))
+  (defun lsp-java--ls-command ()
+    (list "jdt-language-server"
+          "-configuration" "../jdt-configuration"
+          "-data" "../jdt-workspace")))
+
 ;; Nix support
 (use-package nix-mode
   :mode "\\.nix\\'"