feat: add java support

1 files changed, 110 insertions, 0 deletions

diff --git a/ftplugin/java.lua b/ftplugin/java.lua
new file mode 100644
index 0000000..ccec910
--- /dev/null
+++ b/ftplugin/java.lua
@@ -0,0 +1,110 @@
+local home = vim.env.HOME
+
+local jdtls = require("jdtls")
+local project_name = vim.fn.fnamemodify(vim.fn.getcwd(), ":p:h:t")
+local workspace_dir = home .. "/jdtls-workspace/" .. project_name
+
+local config = {
+  cmd = {
+    "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:" .. home .. "/.local/share/nvim/mason/share/jdtls/lombok.jar",
+    "-Xmx4g",
+    "--add-modules=ALL-SYSTEM",
+    "--add-opens", "java.base/java.util=ALL-UNNAMED",
+    "--add-opens", "java.base/java.lang=ALL-UNNAMED",
+
+    "-jar",
+    home .. "/.local/share/nvim/mason/share/jdtls/plugins/org.eclipse.equinox.launcher.jar",
+    "-configuration",
+    home .. "/.local/share/nvim/mason/packages/jdtls/config_linux",
+    "-data",
+    workspace_dir,
+  },
+
+  root_dir = require("jdtls.setup").find_root({ ".git", "mvnw", "pom.xml", "build.gradle" }),
+
+  settings = {
+    java = {
+      home = "/usr/lib/jvm/java-21-openjdk",
+      eclipse = {
+        downloadSources = true,
+      },
+      configuration = {
+        updateBuildConfiguration = "interactive",
+        runtimes = {
+          {
+            name = "JavaSE-17",
+            path = "/usr/lib/jvm/java-17-openjdk",
+          },
+          {
+            name = "JavaSE-21",
+            path = "/usr/lib/jvm/java-21-openjdk",
+          },
+        },
+      },
+      maven = {
+        downloadSources = true,
+      },
+      implementationsCodeLens = {
+        enabled = true,
+      },
+      referencesCodeLens = {
+        enabled = true,
+      },
+      references = {
+        includeDecompiledSources = true,
+      },
+      signatureHelp = { enabled = true },
+      format = {
+        enabled = true,
+        settings = {
+          url = "https://github.com/google/styleguide/blob/gh-pages/intellij-java-google-style.xml",
+          profile = "GoogleStyle",
+        },
+      },
+      completion = {
+        favoriteStaticMembers = {
+          "org.hamcrest.MatcherAssert.assertThat",
+          "org.hamcrest.Matchers.*",
+          "org.hamcrest.CoreMatchers.*",
+          "org.junit.jupiter.api.Assertions.*",
+          "java.util.Objects.requireNonNull",
+          "java.util.Objects.requireNonNullElse",
+          "org.mockito.Mockito.*",
+        },
+        importOrder = {
+          "java",
+          "javax",
+          "com",
+          "org",
+        },
+      },
+      sources = {
+        organizeImports = {
+          starThreshold = 9999,
+          staticStarThreshold = 9999,
+        },
+      },
+      codeGeneration = {
+        toString = {
+          template = "${object.className}{${member.name()}=${member.value}, ${otherMembers}}",
+        },
+        useBlocks = true,
+      },
+    },
+  },
+  capabilities = require("cmp_nvim_lsp").default_capabilities(),
+  flags = {
+    allow_incremental_sync = true,
+  },
+  init_options = {
+    extendedClientCapabilities = jdtls.extendedClientCapabilities,
+  },
+}
+
+jdtls.start_or_attach(config)