update LSP get nvim-jdtls working with Java

init.lua

@@ -38,4 +38,8 @@ else
   require('lsp.lua-ls')
   require('lsp.bash-ls')
   require('lsp.js-ts-ls')
+  -- require('lsp.java-ls')
+  require('lsp.python-ls')
+  require('lsp.json-ls')
+  require('lsp.yaml-ls')
 end

lua/lsp/java-ls.lua

@@ -0,0 +1,15 @@
+-- In Vimscript
+-- augroup lsp
+--   au!
+--   au FileType java lua require('jdtls').start_or_attach({cmd = {'java-linux-ls'}})
+-- augroup end
+-- find_root looks for parent directories relative to the current buffer containing one of the given arguments.
+-- require'lspconfig'.jdtls.setup {cmd = {'java-linux-ls'}}
+if vim.fn.has("mac") == 1 then
+    JAVA_LS_EXECUTABLE = 'java-mac-ls'
+elseif vim.fn.has("unix") == 1 then
+    JAVA_LS_EXECUTABLE = 'java-linux-ls'
+else
+    print("Unsupported system")
+end
+require('jdtls').start_or_attach({cmd = {JAVA_LS_EXECUTABLE}, root_dir = require('jdtls.setup').find_root({'gradle.build', 'pom.xml'})})

lua/lsp/json-ls.lua

@@ -0,0 +1,10 @@
+-- npm install -g vscode-json-languageserver
+require'lspconfig'.jsonls.setup {
+    commands = {
+      Format = {
+        function()
+          vim.lsp.buf.range_formatting({},{0,0},{vim.fn.line("$"),0})
+        end
+      }
+    }
+}

lua/lsp/python-ls.lua

@@ -0,0 +1,2 @@
+-- npm i -g pyright
+require'lspconfig'.pyright.setup{}

lua/lsp/yaml-ls.lua

@@ -0,0 +1,2 @@
+-- npm install -g yaml-language-server
+require'lspconfig'.yamlls.setup{}

lua/nv-vscode/init.vim

@@ -103,3 +103,7 @@ xmap gc  <Plug>VSCodeCommentary
 nmap gc  <Plug>VSCodeCommentary
 omap gc  <Plug>VSCodeCommentary
 nmap gcc <Plug>VSCodeCommentaryLine
+
+" Simulate same TAB behavior in VSCode
+  nmap <Tab> :Tabnext<CR>
+  nmap <S-Tab> :Tabprev<CR>

lua/utils.lua

@@ -26,6 +26,7 @@ define_augroups(
             {'BufWinEnter', '*', 'setlocal formatoptions-=c formatoptions-=r formatoptions-=o'},
             {'BufRead', '*', 'setlocal formatoptions-=c formatoptions-=r formatoptions-=o'},
             {'BufNewFile', '*', 'setlocal formatoptions-=c formatoptions-=r formatoptions-=o'},
+            {'FileType', 'java', 'luafile ~/.config/nvim/lua/lsp/java-ls.lua'},
         },
     }
 )

utils/bin/java-linux-ls

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+# NOTE:
+# This doesn't work as is on Windows. You'll need to create an equivalent `.bat` file instead
+#
+# NOTE:
+# If you're not using Linux you'll need to adjust the `-configuration` option
+# to point to the `config_mac' or `config_win` folders depending on your system.
+
+JAR="$HOME/.config/nvim/ls/eclipse.jdt.ls/org.eclipse.jdt.ls.product/target/repository/plugins/org.eclipse.equinox.launcher_*.jar"
+GRADLE_HOME=$HOME/gradle $HOME/.sdkman/candidates/java/current/bin/java \
+  -Declipse.application=org.eclipse.jdt.ls.core.id1 \
+  -Dosgi.bundles.defaultStartLevel=4 \
+  -Declipse.product=org.eclipse.jdt.ls.core.product \
+  -Dlog.protocol=true \
+  -Dlog.level=ALL \
+  -javaagent:/usr/local/share/lombok/lombok.jar \
+  -Xms1g \
+  -Xmx2G \
+  -jar $(echo "$JAR") \
+  -configuration "$HOME/.config/nvim/ls/eclipse.jdt.ls/org.eclipse.jdt.ls.product/target/repository/config_linux" \
+  -data "${1:-$HOME/workspace}" \
+  --add-modules=ALL-SYSTEM \
+  --add-opens java.base/java.util=ALL-UNNAMED \
+  --add-opens java.base/java.lang=ALL-UNNAMED
+
+  # for older java versions if you wanna use lombok
+  # -Xbootclasspath/a:/usr/local/share/lombok/lombok.jar \