Question: how to install rjava in r?
Answer: Check whether R is 32/64 bit with sessionInfo() . ...  Download the specific 32/64 bit of Java. ...  Download Java JDK for 32/64 bit. ...  If you installed 32-bit Java then everything should be saved in C:/Program Files (x86)/Java/ . ...  Install rJava with install. ...  Set your JAVA_HOME environment with Sys.