return {
  { "jay-babu/mason-nvim-dap.nvim", tag = "v2.0.1" },
  {
    "neovim/nvim-lspconfig",
    dependencies = {
      { "mfussenegger/nvim-jdtls" },
    },
    opts = {
      autoformat = false,
      servers = {
        jdtls = {},
      },
      setup = {
        jdtls = function(_, opts)
          vim.api.nvim_create_autocmd("Filetype", {
            pattern = "java", -- autocmd to start jdtls
            callback = function()
              -- use this function notation to build some variables
              local root_markers = { ".git", "mvnw", "gradlew", "pom.xml", "build.gradle" }
              local root_dir = require("jdtls.setup").find_root(root_markers)

              -- calculate workspace dir
              local project_name = vim.fn.fnamemodify(vim.fn.getcwd(), ":p:h:t")
              local workspace_dir = vim.fn.stdpath("data") .. "/site/java/workspace-root/" .. project_name
              -- os.execute("mkdir " .. workspace_dir)

              -- get the mason install path
              local install_path = require("mason-registry").get_package("jdtls"):get_install_path()
              local debug_install_path = require("mason-registry").get_package("java-debug-adapter"):get_install_path()
              local test_install_path = require("mason-registry").get_package("java-test"):get_install_path()

              -- get the current OS
              local os
              if vim.fn.has("macunix") then
                os = "mac"
              elseif vim.fn.has("win32") then
                os = "win"
              else
                os = "linux"
              end

              -- return the server config
              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:" .. install_path .. "/lombok.jar",
                  "-Xms1g",
                  "--add-modules=ALL-SYSTEM",
                  "--add-opens",
                  "java.base/java.util=ALL-UNNAMED",
                  "--add-opens",
                  "java.base/java.lang=ALL-UNNAMED",
                  "-jar",
                  vim.fn.glob(install_path .. "/plugins/org.eclipse.equinox.launcher_*.jar"),
                  "-configuration",
                  install_path .. "/config_" .. os,
                  "-data",
                  workspace_dir,
                },
                root_dir = root_dir,
                settings = {
                  java = {
                    referencesCodeLens = {
                      enabled = false,
                    },
                  },
                },
                init_options = {
                  bundles = vim.list_extend({
                    vim.fn.glob(debug_install_path .. "/extension/server/com.microsoft.java.debug.plugin-*.jar", true),
                  }, vim.split(vim.fn.glob(test_install_path .. "/extension/server/*.jar", true), "\n")),
                },
                ["on_attach"] = function(client, bufnr)
                  require("jdtls").setup_dap()
                  require("jdtls.setup").add_commands()
                  vim.keymap.set("n", "<leader>cc", function() require('jdtls').compile() end, {buffer = bufnr, desc = "Java Errors"})
                end,
              }
              require("jdtls").start_or_attach(config)
            end,
          })
          return true
        end,
      },
    },
  },
}