install java 16 on linux
//if you don't have sudo add-apt-repository
sudo apt-get install software-properties-common
//install the java installar
sudo add-apt-repository ppa:linuxuprising/java
sudo apt update
//install the newest keyservers
su -
echo "deb http://ppa.launchpad.net/linuxuprising/java/ubuntu focal main" | tee /etc/apt/sources.list.d/linuxuprising-java.list
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 73C3DB2A
apt-get update
exit
//install latest package with recommendations
sudo apt install oracle-java16-installer --install-recommends