Install rJava on archlinux

First, be sure that your date system is correct.

timedatectl

If not setup a ntp server:

sudo timedatectl set-ntp true
sudo pacman -S ntp

 sudo vi /etc/ntp.conf

Replace the server with your stp server:

server ntp.u-psud.fr iburst

Force the date/time update and start the daemon

sudo ntpd -gq
sudo ntpd start

Check if everything is ok

timedatectl

Update the system

sudo pacman -Syu
sudo pacman -S jdk8-openjdk
sudo R CMD javareconf
R

In R, do

install.packages("rJava")
install.packages("mailR")

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