Nvim's Init script for setting up the Apex language server

init.lua

-- Get the file path to the language server file provided by Salesforce.
local apex_jorje_lsp_file_path = vim.fn.expand("~/Downloads/apex-jorje-lsp.jar")

-- Set up the language server configuration for the Apex language, associating
-- it with the three main file types by extension, disabling telemetry, and 
-- specifying the command.
require"lspconfig".apex_ls.setup {
  apex_jar_setup = apex_jorje_lsp_file_path, 
  apex_enable_semantic_errors = false,
  apex_enable_completion_statistics = false,
  filetypes = { 'cls', 'trigger', 'apex' },
  cmd = {
    "java",
    "-jar",
    apex_jorje_lsp_file_path,
    "apex_language_server"
  }
}

-- Associate .cls, .trigger and .apex files with the 'apex' filetype.
vim.cmd("autocmd BufNewFile,BufRead,BufReadPost *.cls,*.trigger,*.apex :set filetype=apex")

This works for the NvChad setup. To enable syntax highlighting for the language, use TSInstall apex, which is the command for the Treesitter plugin (that comes with NvChad).