command line - how can i install jdk-8u91-linux-x64.tar.gz on ubuntu

I downloaded jdk-8u91-linux-x64.tar.gz from the Oracle website.

How can I install jdk-8u91-linux-x64.tar.gz?

I have tried apt-get install jdk-8u91-linux-x64.tar.gz and also

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer