Added jdtls config

ftplugin/java.lua

@@ -0,0 +1,26 @@
+-- print 'Loaded ftplugin/java.lua'
+local jdtls = require 'jdtls'
+
+local root_dir = require('jdtls.setup').find_root { '.git', 'mvnw', 'gradlew', 'pom.xml' }
+if root_dir == '' then
+  root_dir = vim.fn.getcwd()
+end
+
+print('JDTLS root_dir = ' .. root_dir)
+
+local workspace_dir = vim.fn.stdpath 'data' .. '/jdtls-workspace/' .. vim.fn.fnamemodify(root_dir, ':p:h:t')
+
+local config = {
+  cmd = { vim.fn.stdpath 'data' .. '/mason/packages/jdtls/bin/jdtls' }, -- 👈 absolute path
+  root_dir = root_dir,
+  workspace_folder = workspace_dir,
+  settings = {
+    java = {
+      project = {
+        sourcePaths = { 'src' }, -- 👈 tells jdtls where sources begin
+      },
+    },
+  },
+}
+
+jdtls.start_or_attach(config)

init.lua

@@ -816,6 +816,10 @@ require('lazy').setup({
       --- @type blink.cmp.Config
       opts = {
         keymap = {
+          --  This will expand snippets if the LSP sent a snippet.
+          -- Manually trigger a completion from nvim-cmp.
+          --  Generally you don't need this, because nvim-cmp will display
+          --  completions whenever it has completion options available.
           -- 'default' (recommended) for mappings similar to built-in completions
           --   <c-y> to accept ([y]es) the completion.
           --    This will auto-import if your LSP supports it.
@@ -838,7 +842,7 @@ require('lazy').setup({
           --
           -- See :h blink-cmp-config-keymap for defining your own keymap
           preset = 'default',
-
+          ['<Enter>'] = { 'select_and_accept', 'fallback' },
           -- For more advanced Luasnip keymaps (e.g. selecting choice nodes, expansion) see:
           --    https://github.com/L3MON4D3/LuaSnip?tab=readme-ov-file#keymaps
         },