how to get java V8 in OS X Sierra

If you are getting errors when trying to load the rJava library like this:

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/3.4/Resources/library/rJava/libs/rJav a.so':

dlopen(/Library/Frameworks/R.framework/Versions/3.4/Resources/library/rJava/lib s/rJava.so, 6): Library not loaded: @rpath/libjvm.dylib

Referenced from: /Library/Frameworks/R.framework/Versions/3.4/Resources/library/rJava/libs/rJava .so

Reason: image not found

Follow the instructions here: r - trouble installing and loading rJava on mac El Capitan - Stack Overflow

Note that the instructions use the path to an old version of Java 8.

If you go to Terminal and use this command:

/usr/libexec/java_home -v "1.8+"

it will return a path you can copy and paste into the appropriate places in RStudio Console.

Also, note that Step 1 is in Terminal and the rest is in RStudio or R console.

What is in /Library/Java/Virtual Machines

I’m not at a Mac, so the last part may be slightly different. It should be similar.

That's

/Library/Java/JavaVirtualMachines

You should have a folder for 1.6 and a folder for 1.8.

If 1.8 is missing, then you didn't install the Java SE JDK.

That's a different error that probably has nothing to do with Java. You may have to ask the people that created rJava.

Do you need it only for Web Applets, or do you need to run Java programs (e.g. .jar) on your Mac?

The Java.com site only installs the JRE for web applets and the java -version command will not report on the JRE plug-in.

If you want the latter, then Kurt has linked to it.

The Terminal output means you also have Apple's Java 6 installed. That doesn't mean Java 8 has been installed incorrectly. Terminal simply doesn't report it.

It's possible RStudio is looking for the JDK version of Java 8, rather than the simpler runtime version. Check with the maker of JDK before installing any other Java versions. They should be able to steer you in the right direction.

Thanks, I need run a package in R, not java programs.

If it's looking for Java, then at least part of the application package is a Java app.

Since you have Java 6 installed, try /usr/libexec/java_home (not JAVA_HOME) in Terminal. It will list the path of all installed Java versions.

Depending on the response from RStudio, you could just java_home to set the JAVA_HOME environment variable so that the java command runs that version.

$ export JAVA_HOME=`/usr/libexec/java_home -v 1.8+`

However, you may have to explicitly set the java home path in that R package. Which package is it?

You need to get Java 8 from Oracle.

I just installed both Apple's Legacy Java 6 and Oracle's Java 8 SE.

java -version and java_home both only show me the 1.8 version.

Just wondering if you actually got it installed correctly.