Servers Java

eclipse.jdt.ls

Requirements

• Java 17 or later

Installing server

Automatically

I searched the Debian, Fedora, Gentoo, and Ubuntu package websites and came up empty. If you are using Arch (btw), you can install the package via the jdtls AUR package.

Arch Linux (via AUR)

As root/sudo, install a recent JDK from pacman:

pacman -S java-runtime-common jdk-openjdk

Make sure you have a recent Java environment selected (v17 or greater) by running archinux-java status, and set one with archlinux-java set VERSION (where VERSION is the name of the Java environment you want from the list).

Then, install the AUR jdtls package with your AUR helper of choice.

Manually

If you are on an operating system or Linux distribution that does not have a jdtls package (most don't), you will need to download the latest tarball from the Eclipse Foundation website:

mkdir -p /tmp/jdtls.dl
cd /tmp/jdtls.dl
curl -L https://download.eclipse.org/jdtls/milestones/1.40.0/jdt-language-server-1.40.0-202409261450.tar.gz -O

Extract the tarball in the desired PREFIX:

PREFIX="$HOME/.local"
mkdir -p "$PREFIX/share/java/jdtls"
cd "$PREFIX/share/java/jdtls"
tar -xzf /tmp/jdtls.dl/jdt-language-server-1.40.0-202409261450.tar.gz

Then, install the jdtls helper script somewhere in your PATH:

[ ! -d "$HOME/bin" ] && mkdir -p "$HOME/bin" && echo 'export PATH="$HOME/bin:$PATH"' >> "$HOME/.profile"
ln -s "$PREFIX/share/java/jdtls/bin/jdtls" "$HOME/bin/jdtls"

If you made changes to your PATH, you may need to restart your shell.

Registering in .vimrc

if executable('jdtls')
    au User lsp_setup call lsp#register_server({
        \ 'name': 'Eclipse JDT Language Server',
        \ 'cmd': {server_info->['jdtls', '-data', getcwd()]},
        \ 'allowlist': ['java']
        \ })
endif