lsp server not working when editing a new java file

[pokir]

Bug description

When creating a new java file with vim (or nvim), the eclipse-jdt-ls server starts running but nothing happens.

I am using the ddc.vim plugin for auto-completion and ale for displaying errors and warnings, with plugins to bridge between vim-lsp and those two plugins. Neither of the two plugins show any information from vim-lsp, so I am guessing the problem is with vim-lsp.

Steps to reproduce

1. Install eclipse-jdt-ls using :LspInstallServer (if using vim-lsp-settings plugin)
2. mkdir newFolder && cd newFolder
3. vim NewFile.java
4. Wait until :LspStatus displays eclipse-jdt-ls: running
5. Start writing the keyword public or any other java code and see that vim-lsp does nothing

https://github.com/prabirshrestha/vim-lsp/assets/80112484/c83598ef-e3f5-402c-a21b-f0ea0d560400

Environment

vim version: 9.0.1950 nvim version: 0.9.2 OS: macOS 12.6

Relevant parts of my .vimrc (all plugins using the latest version on github):

" To Install Plugins with Vundle: :PluginInstall
" To Update Plugins with Vundle: :PluginUpdate
" To Delete Plugins with Vundle: :PluginClean

" Setting up Vundle
set nocompatible      " be iMproved, required
filetype off          " required

" set the runtime path to include Vundle and initialize
set rtp+=~/.vim/bundle/Vundle.vim

call vundle#begin()

Plugin 'VundleVim/Vundle.vim'           " let Vundle manage Vundle, required

Plugin 'dense-analysis/ale'             " Linter

Plugin 'prabirshrestha/vim-lsp'         " Use Language Server Protocol
Plugin 'mattn/vim-lsp-settings'         " Easily install LSP servers for vim-lsp

Plugin 'vim-denops/denops.vim'          " Let ddc use deno (javascript)

Plugin 'Shougo/ddc.vim'                 " Autocomplete
Plugin 'Shougo/ddc-ui-native'           " UI for ddc
Plugin 'tani/ddc-fuzzy'                 " Fuzzy matcher, sorter, and converter

" Bridge vim-lsp -> ALE, vim-lsp -> ddc
Plugin 'rhysd/vim-lsp-ale'              " Give LSP info from vim-lsp to ALE for errors and warnings
Plugin 'shun/ddc-source-vim-lsp'        " Give LSP info from vim-lsp to ddc for autocomplete

call vundle#end()

filetype plugin indent on    " required (for Vundle)

" -- ddc plugin settings

call ddc#custom#patch_global('ui', 'native')
call ddc#custom#patch_global('sources', ['vim-lsp'])

call ddc#custom#patch_global('sourceOptions', #{
      \   vim-lsp: #{
      \     mark: 'lsp',
      \   },
      \   _: #{
      \     sorters: ['sorter_fuzzy'],
      \     matchers: ['matcher_fuzzy'],
      \     converters: ['converter_fuzzy'],
      \   },
      \ })