jri.dll: Can't find dependent libraries

Question

I am trying to setup a Java project on a Windows computer that invokes R code using rJava/JRI. I have installed JDK 1.8, R 3.5.3 and rJava library in R on my computer. I have added the following to my Pathvariable: D:\Program Files\R\R-3.5.3\bin\x64; D:\Program Files\R\R-3.5.3\library\rJava\jri\x64. I have also configured the Build Path in Eclipse by adding the three JAR files from the jri folder as external JARs and by changing the native library to D:/Program Files/R/R-3.5.3/library/rJava/jri/x64. These are the same steps that I've recently done on another Windows computer and afterwards the R test script worked perfectly. However, on my current computer I keep getting the following message:

Please make sure that the JRI native library is in a directory listed in java.library.path.

java.lang.UnsatisfiedLinkError: D:\Program Files\R\R-3.5.3\library\rJava\jri\x64\jri.dll: Can't find dependent libraries
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary0(Unknown Source)
    at java.lang.ClassLoader.loadLibrary(Unknown Source)
    at java.lang.Runtime.loadLibrary0(Unknown Source)
    at java.lang.System.loadLibrary(Unknown Source)
    at org.rosuda.JRI.Rengine.<clinit>(Rengine.java:19)
    at rtest.main(rtest.java:61)

Any idea what's going wrong? I would be really greatful for any help.

EDIT: Here is what my Build Path looks like:

EDIT2: Additionally, I have now copied all .DLL files from D:\Program Files\R\R-3.5.3\bin\x64 together with jri.dll to D:\Program Files\Java\jdk1.8.0_201\bin as recommended here. Still no luck.

Answer 1

I resolved this after coming across this bug report: https://www.mail-archive.com/openjfx-dev@openjdk.java.net/msg22016.html "As previously mentioned, the above exception is not thrown on machines where the Visual C++ 2019 redistributable is installed."

I downloaded the MS Visual C++ redistributable for 2015-2019 and installed it on two different computers with diff combinations of offAdoptJDK, jre_8u_202, and jre_8u_265, and this resolved my issue.

I downloaded the redistributable from the link below: https://support.microsoft.com/en-us/topic/the-latest-supported-visual-c-downloads-2647da03-1eea-4433-9aff-95f26a218cc0

For Windows 10, I installed "x64: vc_redist.x64.exe" above and then my program ran successfully.

Answer 2

Please try this one:
Run As -> Run Configuration -> Set Environment Variables ->New
Name : PATH
Value: C:\Program Files\R\R-3.6.1\bin\x64;C:\Users\[Username]\Documents\R\win-library\3.6\rJava\jri\x64;

Answer 3

Ok, I got it. After having done everything that is listed in the first post, I also copied all .DLL files from D:\Program Files\R\R-3.5.3\bin\x64 together with jri.dll from D:\Program Files\R\R-3.5.3\library\rJava\jri\x64 to D:\Program Files\Java\jre1.8.0_201\bin (in addition to the JDK folder). Now the test script works. Thanks to everyone who tried to help!

Answer 4

Try this:

1. Right click on project > Java Build Path (here you can look your libraries and import libraries)
2. Try do a clean and build
3. Check your JDK
4. If you have others eclipse installed on your computer look your file eclipse.ini and check than your JDK is correctly linked