With Java you can play games, upload photos, chat online, take a virtual tour and use of such services as distance learning, remote banking service and view interactive maps. If you have not installed Java environment, many applications and websites simply will not work.
Installation into Linux Mint:
sudo add-apt-repository ppa:webupd8team/java sudo apt-get update sudo apt-get install oracle-java9-installer
Setup Java environment
In the Webupd8 PPA repository, there is also a package for setting an environment variable, install this package using the following command:
sudo apt-get install oracle-java9-set-default