Add realgud-jdb [not working]

emacs/.emacs.d/config/init-ide.el

@@ -214,7 +214,21 @@
 
 ;; Debugger interface
 (use-package realgud
-  :defer t
+  :defer t)
+
+(use-package realgud-jdb
+  :commands realgud:jdb-maven
   :config
+  (defun realgud:jdb-maven ()
+    "Runs realgud:jdb, setting the classpath from Maven."
+    (interactive)
+    (let ((default-directory (project-root (project-current))))
+      (when (not (locate-dominating-file default-directory "pom.xml"))
+        (user-error "Not a Maven project."))
+      (with-env `(("CLASSPATH" .
+                   ,(s-trim
+                     (shell-command-to-string
+                      "mvn -q exec:exec -Dexec.executable=echo -Dexec.args=\"%classpath\""))))
+        (call-interactively #'realgud--jdb)))))
 
 (provide 'init-ide)