https://github.com/nvim-java/nvim-java
https://github.com/mfussenegger/nvim-jdtls

2024
https://www.reddit.com/r/neovim/comments/1cytzff/how_can_neovim_be_improved_for_java_need_help_for/
2022
https://sookocheff.com/post/vim/neovim-java-ide/
    https://habr.com/ru/articles/760234/