How to install Oracle Java and JDK on Ubuntu 20.10
How to install Oracle Java and JDK on Ubuntu 20.10:- 1. sudo apt-get update 2. sudo mkdir /usr/lib/jvm 3. cd /usr/lib/jvm 4. sudo tar -xvzf /mnt/jdk-8u221-linux-x64.tar.gz 5. sudo gedit /etc/environment 6. PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/jvm/jdk1.8.0_221/bin:/usr/lib/jvm/jdk1.8.0_221/db/bin:/usr/lib/jvm/jdk1.8.0_221/jre/bin" J2SDKDIR="/usr/lib/jvm/jdk1.8.0_221" J2REDIR="/usr/lib/jvm/jdk1.8.0_221/jre" JAVA_HOME="/usr/lib/jvm/jdk1.8.0_221" DERBY_HOME="/usr/lib/jvm/jdk1.8.0_221/db" 7.sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.8.0_221/bin/java" 0 sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.8.0_221/bin/javac" 0 sudo update-alternatives --set java /usr/lib/jvm/jdk1.8.0_221/bin/java sudo update-alternatives --set javac /usr/lib/jvm/jdk1.8...