How do i enable nullAnalysis?

[alven-shin]

I would like to enable null analysis so I get warnings when I forget null checks on annotated variables. I tried the following config but it does not seem to work.

-- ftplugin/java.lua
local config = {
  cmd = { "jdtls" },
  root_dir = vim.fs.dirname(vim.fs.find({ "gradlew", ".git", "mvnw" }, { upward = true })[1]),
  settings = {
    java = {
      compile = {
        nullAnalysis = {
          mode = "automatic",
        },
      },
    },
  },
}
require("jdtls").start_or_attach(config)

I am testing the feature with the following code, and in VS Code with the Java extension, a warning is produced for the missing null check.

import javax.annotation.Nullable;

public class Test {
    private @Nullable String name;

    public void print() {
        System.out.println(this.name.length()); // Warning only appears on VSCode: Potential null pointer access: The field name is specified as @Nullable Java(33555356)
    }
}

[agriffis]

Did you ever figure this out? I had a similar question at eclipse-jdtls/eclipse.jdt.ls#2952 but I could never understand how to apply the suggestion.

[alven-shin]

I did not. The last time i tried was about a year ago, so things may have changed since then. There is also the nvim-java plugin now which may work better.

[agriffis]

Thanks for the reply! I have made some progress at eclipse-jdtls/eclipse.jdt.ls#2655 (comment)