Java debugger implementation disscussion

[richPurba]

So this should be straightforward (IMHO).
The implementation has been done by Microsoft, and I think the implementation here could be as straightforward as python for an example.
I want to contribute to this project since this is a great project in my opinion. Let me know if there is any opinion about this initial discussion

[pocco81]

Hey! I was checking java-debug and it really isn't hard to implement, it's very straightforward as you said.

Feel free to PR it, it'd be awesome!

[ak-seyam]

Any updates?

[PlatyPew]

This is what I did to install java-debug, works on macOS and Linux (never tested, but should work, though the JAVA_HOME path might need to be amended)

I couldn't compile it with Java 17, so I had to link it to the home directory of Java 11 JAVA_HOME=/Library/Java/JavaVirtualMachines/zulu-11.jdk/Contents/Home

function _G.install_javadebug()
    local installation_path = vim.fn.stdpath("data") .. "/dapinstall/"

    if vim.fn.isdirectory(installation_path) == 0 then
        vim.fn.mkdir(installation_path)
    end

    installation_path = installation_path .. "/java-debug"
    vim.fn.mkdir(installation_path)

    local git_url = "https://github.com/microsoft/java-debug"

    vim.fn.system({ "git", "clone", git_url, installation_path })

    vim.cmd(
        "split | terminal cd "
            .. installation_path
            .. " && JAVA_HOME=/Library/Java/JavaVirtualMachines/zulu-11.jdk/Contents/Home ./mvnw clean install"
    )
end

function _G.uninstall_javadebug()
    local installation_path = vim.fn.stdpath("data") .. "/dapinstall/java-debug"
    vim.fn.delete(installation_path, "rf")

    print("Java-debug uninstalled")
end

vim.cmd("command! DIInstallJava call v:lua.install_javadebug()")
vim.cmd("command! DIUninstallJava call v:lua.uninstall_javadebug()")

Getting the debugger working with jdtls is a whole different story though as it involves installing the nvim-jdtls plugin, attaching it to the LSP and configuring some initialisation options

[punowo]

This is what I did to install java-debug, works on macOS and Linux (never tested, but should work, though the JAVA_HOME path might need to be amended)

I couldn't compile it with Java 17, so I had to link it to the home directory of Java 11 JAVA_HOME=/Library/Java/JavaVirtualMachines/zulu-11.jdk/Contents/Home

Might be a stupid question but why not just get the artifact ? https://search.maven.org/artifact/com.microsoft.java/com.microsoft.java.debug.plugin
https://repo1.maven.org/maven2/com/microsoft/java/com.microsoft.java.debug.plugin/

I basically don't know lua, so I made a local PKGBUILD where I would get the latest version, getting the proper latest version was a pipe hell but it worked. It also seemed to work with java 18 EA.

( In the end I gave up and just installed eclipse-plaform with vrapper on my work laptop but I would like to reach a day when all this works similar to how lsps work on nvim )