Install Java8 on Debian 8/9
Add repositories:
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list
Add Key:
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EEA14886
Update:
apt update
Install:
apt-get install oracle-java8-installer
Finish