java: switch to jdtls instead

nix/neovim-overlay.nix

@@ -99,7 +99,7 @@ with final.pkgs.lib; let
     # language servers, etc.
     lua-language-server
     clang-tools # provides clangd which is a c/c++ lsp
-    java-language-server
+    jdt-language-server # java ls
     nil # nix LSP
 
     # autoformatters

nvim/ftplugin/java.lua

@@ -1,5 +1,5 @@
 -- Exit if the language server isn't available
-if vim.fn.executable('java-language-server') ~= 1 then
+if vim.fn.executable('jdtls') ~= 1 then
   return
 end
 
@@ -9,8 +9,8 @@ local root_files = {
 }
 
 vim.lsp.start {
-  name = 'java_language_server',
-  cmd = { 'java-language-server' },
+  name = 'jdtls',
+  cmd = { 'jdtls' },
   root_dir = vim.fs.dirname(vim.fs.find(root_files, { upward = true })[1]),
   capabilities = require('user.lsp').make_client_capabilities(),
 }