Hey, Happy new year and a good continuation! I would like to combine imports from header-args with imports from a source block. Here is an example: * RxJava :PROPERTIES: :header-args: :dir src :results output code :header-args:java: :cmdline -classpath ./rxjava-1.3.8.jar:src:. :cmpflag -classpath ./rxjava-1.3.8.jar:src:. :imports rx.Observable rx.Subscriber :END: #+BEGIN_SRC java import static rx.Observable.empty; import static rx.Observable.just; import static rx.Observable.range; Observable .range(5, 5) .flatMap(x -> just(x * 2)) .flatMap(x -> (x != 10) ? just(x) : empty()) .subscribe(System.out::println); #+END_SRC I didnt get the to work so I made a patch. What do you think about it? Stay safe! Best regards John