rJava installation fails on macOS 10.14

Question

After upgrading to MacOS Mojave (10.14.1), I\'m no longer able to install rJava for R version 3.5.1 with Java version \"1.8.0_102\" installed.

I tried

Answer 1

I ran into the exact problem. I solved it by:

1. Install the latest version of Java (dmg file)

2. Install rJava in Studio: install.packages("rJava")

3. In the terminal: sudo mv jdk-12.0.1.jdk jdk-11.0.1.jdk

Otherwise the following error will appear in Rstudio:

Error: package or namespace load failed for ‘rJava’:
 .onLoad failed in loadNamespace() for 'rJava', details:
  call: dyn.load(file, DLLpath = DLLpath, ...)
  error: unable to load shared object '/Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so':
  dlopen(/Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so, 6): Library not loaded: /Library/Java/JavaVirtualMachines/jdk-11.0.1.jdk/Contents/Home/lib/server/libjvm.dylib
  Referenced from: /Library/Frameworks/R.framework/Versions/3.5/Resources/library/rJava/libs/rJava.so
  Reason: image not found

4. In Rstudio: library(rJava)

5. rJava should have been loaded without issues.