added jls extra

lua/lazyvim/plugins/extras/lang/jls.lua

@@ -0,0 +1,133 @@
+if lazyvim_docs then
+  -- nvim-jls configuration options (set via opts on "idelice/nvim-jls"):
+  --   jls_dir = nil                    -- path to a custom JLS install dir; nil = auto (mason > managed)
+  --   inlay_hints = { enabled = false} -- parameter name hints at call sites (off by default)
+  --   auto_restart = false             -- automatically restart JLS on crash (up to 3 attempts with backoff)
+  --   jvm_args = nil                   -- override default JVM heap args (-Xmx2g -Xms512m …)
+  --   settings = {}                    -- raw LSP settings payload forwarded to JLS
+  -- JLS is installed automatically via mason. For a mason-free setup, run :JlsInstall instead.
+  --
+  -- ## Debugging
+  --
+  -- JLS ships a DAP debug adapter (`jls-debug-adapter`) that attaches to a JVM via JDWP.
+  -- This extra configures it automatically. To use it:
+  --
+  -- 1. Start your Java application with JDWP enabled (port 5005):
+  --
+  --    Maven:   ./mvnw spring-boot:run \
+  --               -Dspring-boot.run.jvmArguments="-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005"
+  --    Gradle:  ./gradlew bootRun --debug-jvm
+  --    JAR:     java -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005 -jar app.jar
+  --
+  -- 2. Open Neovim from the project root (so sourceRoots resolves to src/main/java automatically).
+  --    If your sources are elsewhere, set SOURCE_ROOT=/path/to/src/main/java before launching Neovim.
+  --
+  -- 3. Press `<leader>dc` and select "Debug (Attach) - Remote (JLS)".
+  --
+  -- Set breakpoints with `<leader>db` before or after attaching.
+end
+
+return {
+  recommended = function()
+    return LazyVim.extras.wants({
+      ft = "java",
+      root = {
+        "build.gradle",
+        "build.gradle.kts",
+        "build.xml", -- Ant
+        "pom.xml", -- Maven
+        "settings.gradle", -- Gradle
+        "settings.gradle.kts", -- Gradle
+        "WORKSPACE",
+        "WORKSPACE.bazel",
+        ".java-version",
+      },
+    })
+  end,
+
+  -- Add java to treesitter.
+  {
+    "nvim-treesitter/nvim-treesitter",
+    opts = { ensure_installed = { "java" } },
+  },
+
+  -- Ensure JLS binary is installed via mason.
+  -- nvim-jls automatically resolves the mason install path at startup.
+  {
+    "mason-org/mason.nvim",
+    optional = true,
+    opts = { ensure_installed = { "jls" } },
+  },
+
+  -- Disable nvim-jdtls when jls extra is enabled.
+  {
+    "mfussenegger/nvim-jdtls",
+    optional = true,
+    enabled = false,
+  },
+
+  -- Disable jdtls in lspconfig and prevent mason from installing it.
+  -- Table opts deep-merge cleanly, so this is order-independent regardless
+  -- of whether lang.java is also enabled.
+  -- jls is registered in nvim-lspconfig. nvim-jls calls lspconfig.jls.setup() from
+  -- its ftplugin, so we do not add jls to servers here — nvim-jls owns the client
+  -- lifecycle and passes its own root detection, on_attach, and settings through.
+  -- WARNING: do not add `servers = { jls = {} }` to your lspconfig opts.
+  -- Doing so causes lspconfig to start a default jls client before nvim-jls
+  -- can apply its configuration; lspconfig will then reuse that bare client
+  -- for all buffers in the project, ignoring nvim-jls opts entirely.
+  {
+    "neovim/nvim-lspconfig",
+    optional = true,
+    opts = {
+      servers = {
+        jdtls = { enabled = false, mason = false },
+      },
+    },
+  },
+
+  -- Configure the JLS debug adapter (installed alongside the LSP binary by mason).
+  -- The adapter communicates via stdio and attaches to a JVM running with JDWP.
+  -- Start your JVM with: -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005
+  {
+    "mfussenegger/nvim-dap",
+    optional = true,
+    opts = function()
+      local dap = require("dap")
+      dap.adapters.jls = {
+        type = "executable",
+        command = "jls-debug-adapter",
+      }
+      dap.configurations.java = dap.configurations.java or {}
+      vim.list_extend(dap.configurations.java, {
+        {
+          type = "jls",
+          request = "attach",
+          name = "Debug (Attach) - Remote (JLS)",
+          hostName = "127.0.0.1",
+          port = 5005,
+          -- Required by JLS: path(s) to Java source roots.
+          -- Defaults to Maven/Gradle standard layout (src/main/java).
+          -- Override by setting the SOURCE_ROOT env var before launching Neovim.
+          sourceRoots = function()
+            local root = os.getenv("SOURCE_ROOT")
+            if root and root ~= "" then
+              return { root }
+            end
+            return { vim.fn.getcwd() .. "/src/main/java" }
+          end,
+        },
+      })
+    end,
+  },
+
+  -- nvim-jls: Neovim client for JLS (Java Language Server).
+  -- JLS starts automatically for java buffers via its ftplugin.
+  -- JLS binary is installed by mason; nvim-jls resolves the mason path automatically.
+  {
+    "idelice/nvim-jls",
+    main = "jls",
+    ft = { "java" },
+    opts = {},
+  },
+}