RWeka installation

[jcblum]

Many people find rJava tricky to get set up. This link might be helpful:

Installing rJava on macOS

There are some other useful troubleshooting links in this thread:

Errors loading rJava - ".onLoad failed in loadNamespace() for 'rJava', details..."

I have trouble running "library(xlsx)". Every time I run it, I get an error( See the attachment). I already downloaded package readxl and xlsx and java, but it still cannot work. How to set the Java environment variable in R? [error] BTW, my computer system is Mac OS. Could you help me with this, please?