The problem was reported in https://stackoverflow.com/questions/48893994/groovy-in-org-mode-babel
I reproduced the problem locally. The basic error message is Caught: java.lang.ClassFormatError: Illegal class name "groovy-31624d60$isGolden" The problem is the dash. The patch replaces dashes with underscores when constructing temp file names. -- Nick
>From a4b64486c8f527b04ae915dcc45a3a2ec43d8e62 Mon Sep 17 00:00:00 2001 From: Nick Dokos <ndo...@redhat.com> Date: Fri, 23 Feb 2018 17:58:27 -0500 Subject: [PATCH] Replace dash by underscore in temp file names. * org-babel-groovy-evaluate: replace '-' by '_' in temp file names. Apparently, the JVM uses file names in the construction of names of internal objects and dashes are illegal in that context. See https://stackoverflow.com/questions/48893994/groovy-in-org-mode-babel for an example. --- lisp/ob-groovy.el | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lisp/ob-groovy.el b/lisp/ob-groovy.el index 67e7562fb..565b09754 100644 --- a/lisp/ob-groovy.el +++ b/lisp/ob-groovy.el @@ -84,12 +84,12 @@ in BODY as elisp." (when session (error "Sessions are not (yet) supported for Groovy")) (pcase result-type (`output - (let ((src-file (org-babel-temp-file "groovy-"))) + (let ((src-file (org-babel-temp-file "groovy_"))) (progn (with-temp-file src-file (insert body)) (org-babel-eval (concat org-babel-groovy-command " " src-file) "")))) (`value - (let* ((src-file (org-babel-temp-file "groovy-")) + (let* ((src-file (org-babel-temp-file "groovy_")) (wrapper (format org-babel-groovy-wrapper-method body))) (with-temp-file src-file (insert wrapper)) (let ((raw (org-babel-eval -- 2.14.3
