gnu: Add java-qdox.

* gnu/packages/java.scm (java-qdox): New variable.

gnu/packages/java.scm

@@ -10186,3 +10186,32 @@ This module can be assimilated to a significantly improved version of log4j.
 Moreover, @code{logback-classic} natively implements the slf4j API so that you
 can readily switch back and forth between logback and other logging frameworks
 such as log4j or @code{java.util.logging} (JUL).")))
+
+(define-public java-qdox
+  (package
+    (name "java-qdox")
+    ; Newer version exists, but this version is required by java-plexus-component-metadata
+    (version "2.0-M2")
+    (source (origin
+              (method url-fetch)
+              ;; 2.0-M4, -M5 at https://github.com/paul-hammant/qdox
+              ;; Older releases at https://github.com/codehaus/qdox/
+              ;; Note: The release at maven is pre-generated. The release at
+              ;; github requires jflex.
+              (uri (string-append "http://central.maven.org/maven2/"
+                                  "com/thoughtworks/qdox/qdox/" version
+                                  "/qdox-" version "-sources.jar"))
+              (sha256
+               (base32
+                "10xxrcaicq6axszcr2jpygisa4ch4sinyx5q7kqqxv4lknrmxp5x"))))
+    (build-system ant-build-system)
+    (arguments
+     `(#:jar-name "qdox.jar"
+       #:tests? #f)); no tests
+    (home-page "http://qdox.codehaus.org/")
+    (synopsis "Parse definitions from Java source files")
+    (description "QDox is a high speed, small footprint parser for extracting
+class/interface/method definitions from source files complete with JavaDoc
+@code{@@tags}.  It is designed to be used by active code generators or
+documentation tools.")
+    (license license:asl2.0)))