install java on ubuntu
// for debian & debian based linux distributions sudo su or 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 Ctrl + D or exit // for Ubuntu, Linux Mint, Pop!_OS or Zorin Os sudo add-apt-repository ppa:linuxuprising/java sudo apt update // Now you can install Oracle JDK 16 on Debian / Ubuntu and Linux distributions based on these: //Install and make Oracle JDK 16 the default JDK version: sudo apt install oracle-java16-installer --install-recommends //Install but don't make Oracle JDK 16 the default JDK version: sudo apt install oracle-java16-installer --no-install-recommends //To check which Java version is set as default on your system java -version or javac -version //To accept the Oracle Java 16 license automatically echo oracle-java16-installer shared/accepted-oracle-license-v1-2 select true | sudo /usr/bin/debconf-set-selections //If that doesn't work, also try this command: echo oracle-java16-installer shared/accepted-oracle-licence-v1-2 boolean true | sudo /usr/bin/debconf-set-selections
