Configure Neovim for Java Development 

I suggest to maybe post a follow-up video when that happens

@@JonathanMorrisMusic Oh good suggestion. Do you know offhand where the data directory is by default in nvim-java? I have been blowing away ~/.local/share/KickstartNvim but if it is outside that directory then this may be tripping me up.

​@@ascourter I apparently must have been temporarily banned from posting on YT since I've been trying to reply to this message for the past day lol. Must be because I tried to post a bash command. Anyway, it's defined in the nvim-java/nvim-java-core plugin and resolves to either HOME/.cache/nvim/jdtls/workspaces/common-workspace or XDG_CACHE_HOME/nvim/jdtls/workspaces/common-workspace (removing the dollar signs from the variables in case I get flagged again somehow).

@@JonathanMorrisMusic Oh geez, I was wondering what happened to your messages when I looked for them. Crazy that you got a temporary ban. Thank you for your perseverance in posting the comment! I will check this and see if removing that cache gets this working for me. Thanks!

@@ascourter No problem, sounds good!

Good question. For Language Definitions I meant looking through language level APIs (e.g. if you went to definition on a library method, it would take you to the definition or interface). Document symbols is a term used by other plugins that allow you to view a file at a high level so I should have used a different term there. syntax highlighting should come from Treesitter. Code Navigation & Refactoring should come from the LSP (nvim-jdtls has specific commands you can call for refactoring). Debugging is missing and I was actually working on that capability today. But it is not coming together as easily as I had hoped.

Yes treesitter should be installed and then when it detects a Java file I believe it will install that grammar. Adding it into the config will make it explicit and install it before you land in a Java file.

This is a good call-out. I believe I updated these correctly for Kickstart but will double check. Thanks!

You might open an issue with the plugin and see if they can give you some guidance. Sorry it isn't working!

Did you try getting the more manual approach working?

Welcome! Of course, replace lazy.nvim with packer and the installation should be the same. I would recommend migrating to lazy.nvim though since packer is no longer maintained.

@@ascourter thx alot! been watching your videos for almost a half a week!

packer is deprecated now, even the developer of packer uses lazy, lazy is just better

Seems like the LSP is not connected or running. If you use :LspInfo do you see anything?

@@ascourter It seems like at some point i messed up compl Here's the response i get from :LspInfo: Language client log: /home/brianvf/.local/state/nvim/lsp.log Detected filetype: java 2 client(s) attached to this buffer: Client: jdtls (id: 1, bufnr: [8]) filetypes: autostart: false root directory: /home/brianvf/coding/java cmd: /home/brianvf/.local/share/nvim/mason/bin/jdtls Client: jdtls (id: 2, bufnr: [8]) filetypes: java autostart: true root directory: /home/brianvf/coding/java cmd: /home/brianvf/.local/share/nvim/mason/bin/jdtls -configuration /home/brianvf/.cache/jdtls/config -data /home/brianvf/.cache/jdtls/workspace Configured servers list: jdtls, lua_ls, tsserver

@@ascourter It shows me the following 2 client(s) attached to this buffer: Then I have jdtls twice. Guess I mesed up somehow

@@brianfarias7285 yeah, see if you can figure out why you have two instead of one

Did you fix that? I have the same problem, 1 client is running

Thanks for watching!

If you are using Google Java Format do: null_ls.builtins.formatting.google_java_format.with({ extra_args = {"-aosp"} })

That's no good! Try opening an issue on GitHub and see if they can get you fixed

Same here, in fact, the jdtls configuration appears to be incorrect also.

I think there's always opportunity in the Java space 😁

@@ascourter that’s been a true statement for many decades. Haha

Great question. I haven't tried a project with either of those yet

I will add this to my list!

Oh no! What error are you getting? Hopefully that hatred is not directed at me

@@ascourter Expected a table of specs but a nil was returned (from the jdtls code) I have a large Neovim setup with lazy and all my plugins are in individual Lua files, the jdtls plugin is the only one which fails. Health check is fine, as is Java (I do a lot of Spring / Java development) it seems to be a syntax issue. (Copied mainly from the repos)

I don’t believe you

Maybe something like this? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-v94B4BzCphU.html

@@ascourter dam my memory failed me. Thanks! I think I actually watched this. Is Flutter useable in Neovim? (Unlike Kotlin).

@@mars_0008 no worries. Hmmm I'm not sure about Flutter, I'm not sure off the top of my head.

Ha. It would be nice if they allowed an embedded Neovim someday

@@ascourter it would be awesome if they open sourced there java plugin just like there rust plugin

The only thing I don't know is how to update the project after adding a new dependency. Would you know?

@@AndreLuisOS i use gradle for this, i think you can do the same if you're using maven

Are you asking if you can develop Java in Neovim?

@@LorenzoBettini I haven't made the follow up yet. I'll put it on my list next to see if I can get it working

Hmmm, double check your LSP is configured correctly by running :LspInfo.

I believe the LSP should handle this if you do an LSP rename (vim.lsp.buf.rename())

I haven't seen that one before. You might check this out: stackoverflow.com/questions/28129169/the-blank-final-field-may-not-have-been-initialized If that doesn't help then I'd open an issue on jdtls and see if someone there can help

@@ascourter Thanks, will do, because it's giving the error when injecting dependencies like this and using lombok it shouldn't happen

@@ascourter I tried nvim-java and worked like a charm, I didn't get any issues and I did exactly as you did. Thank you very much, good content :D

@@NicolasRuizX nice! I'm glad you got it working!

Glad it helped!

Are you using your own config or LazyVim?

@@ascourter my own config

@@Rahim-444 is it two jdtls instances? You should only have one running so you'll have to drop one so you don't have collisions

@@ascourter how can i drop the mason one ? it has auto start on, the other one is the plugin one both are running at the same time

@@Rahim-444 if you remove it from your ensure_installed section then mason shouldn't auto install and you can uninstall it manually

Here's my config that has my kitty conf file. The status bar you're talking about is from tmux. That config is under the tmux conf file. I went over setting up tmux in a previous video if that helps. github.com/exosyphon/dotfiles

@@ascourter thanks 👍

I put them right above the mason-lspconfig line, I'll try putting them at the very end and see if that gets it working. Thanks!

Ok, I placed them at the absolute end of the file but that didn't seem to work for me. :(

@@ascourter tldr: put the require('java').setup() in the config function of nvim-java, put the require('lspconfig').jdtls.setup {} at the very bottom of the file. Edit: I posted a comment with a github link but I think it was filtered out

Thanks@@guglielmobartelloni , I'll give this a try today

@@guglielmobartelloniI updated my config but it still won't work for me. I am getting a different error. Here's the open issue I have on Github: github.com/nvim-java/nvim-java/issues/135

Yep, still trying to figure this one out 😞

java is fun in neovim xd

@@elliotalderson9517 we all can't be masochistic

@@c1dk1n being masochist is funny i suppose