Run R Package that requires Java in MAC M2 Sonoma

RStudio IDE
1

I have an issue with a R package built on Java. I have a Mac M2 Sonoma. The problem may be related to the java version I have and its directory but I'm unable to fix it. Code and error below:

library(rJava)
Sys.setenv(JAVA_HOME="path/to/java")
J("java.lang.System")$getProperty("java.version")
[1] "23.0.2"

require(devtools)
install_github(repo = "amattioc/SDMX", subdir = "RJSDMX")
library(RJSDMX)
getProviders()

getProviders()
Error in .jcall("RJavaTools", "Ljava/lang/Object;", "invokeMethod", cl, :
java.lang.IllegalAccessException: class RJavaTools cannot access a member of class java.util.TreeMap$Entry (in module java.base) with modifiers "public"

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2

The issue is due to Java's module system restrictions in newer versions. Try switching to an older LTS version like Java 17 or 11:

  1. Install Java 17 (if not installed):
    brew install --cask temurin17
  2. Set Java 17 as default for R:
    Sys.setenv(JAVA_HOME="/Library/Java/JavaVirtualMachines/temurin-17.jdk/Contents/Home")
  3. Restart R and try running the package again.

If the issue persists, check if rJava is correctly linked:

library(rJava)  
.jinit()

If errors occur, reinstall rJava after setting JAVA_HOME.

3

Thanks.

We tried "Sys.setenv" restarting R but it did not work.

It was solved by a IT colleague inserting JAVA HOME -> OpenJDK 11 in the .Renviron file (we used version 11)

Così ho inserito JAVA_HOME -> OpenJDK 11 nel file .Renviron e questo ha funzionato

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