View source for Debian 8.11 Install OpenJDK 8

Trying to install Unifi controller 5.8.24-11016, but need to update from OpenJDK 7 to 8. However 8 is not  in the standard repositories. Found it listed in the backports repo on the Debian site<ref>https://packages.debian.org/search?keywords=openjdk-8-jre</ref>, then I found useful information on adding this repository<ref>https://serverfault.com/questions/830636/cannot-install-openjdk-8-jre-headless-on-debian-jessie</ref>
<pre>
sudo nano /etc/apt/sources.list

....
## Jessie-Backports (for OpenJDK 8)
deb http://http.debian.net/debian jessie-backports main
</pre>
Then convert from 7 to 8
<pre>
sudo /usr/sbin/update-java-alternatives -s java-1.8.0-openjdk-amd64
</pre>