Re: java anyone?

[Jean-Christophe Helary]

Thank you Pankaj. I'll give that a try.

Jean-Christophe 

> On Jul 18, 2021, at 20:26, Pankaj Jangid <pankaj@codeisgreat.org> wrote:
> 
> Jean-Christophe Helary <lists@traduction-libre.org> writes:
> 
>> I need something where I can just lookup functions in a code base with
>> a local javadoc tree, including online Oracle documentation, etc. Not
>> a full-fledged IDE with completion.
> 
> I use a very lightweight language server facilitator, named Eglot. There
> are a couple of settings that are required for this to work. This is the
> minimal set that I came-up with after discussing in and following the
> Eglot tracker.
> 
> 1. Tell Emacs the value of JAVA_HOME. ‘(setenv "JAVA_HOME" ...)’
> 
> 2. By default, Eglot uses, Eclipse JDT Language server so you need to
>   install it somewhere. I simply pulled the git repository at
>   ~/.emacs.d/eclipse.jdt.ls. After building the Eclipse JDT LS (‘mvn
>   clean; mvn package’), you must add the language server JAR to the
>   CLASSPATH. I use the following snippet:
> 
> --8<---------------cut here---------------start------------->8---
>   (defun add-to-classpath (item)
>     "Add ITEM to CLASSPATH."
> 
>     (let ((class-path (getenv "CLASSPATH")))
> 
>       (defvar class-path-list (if class-path
>                                   (split-string class-path ":")))
>       (cl-pushnew item class-path-list)
>       (setenv "CLASSPATH"
>               (mapconcat 'identity class-path-list ":"))))
> 
>   (add-to-classpath
>    (substring
>     (shell-command-to-string
>      (format
>       "find %s -name 'org.eclipse.equinox.launcher_*jar'"
>       (expand-file-name
>        "eclipse.jdt.ls/org.eclipse.jdt.ls.product/target/repository/plugins"
>        user-emacs-directory)))
>     0 -1))
> --8<---------------cut here---------------end--------------->8---
> 
> Eglot works with project.el, xref.el, eldoc.el etc. So many usual things
> will work out of the box. Like online help when the point is inside a
> function name. 
> 
> It also works with company; but that is not required.
> 
> 

-- 
Jean-Christophe Helary @brandelune
https://mac4translators.blogspot.com
https://sr.ht/~brandelune/omegat-as-a-book/