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Is it possible to return a HashMap to R with the rJava extension of R?
E.g. I have a method in Java, which returns a HashMap and I want this HashMap use in R. I tried:
.jcall(javaObj, "Ljava/util/HashMap", "getDbInfoMap")
This doesn’t work.
Do I have to put everything into a String[], that I want to pass to R from Java?
Or is there another possibility?
Any help/info on this would be greatly appreciated.
You’re missing a semi-colon when specifying the
HashMapreturn type.See JNI Types Field Descriptors and examples of .jcall.