installing Java & Setting Up Environment Variables on Ubuntu 20.04 / Linux Mint 19.3 Tricia

Video Tutorials -

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Java is one of the most popular programming languages used to build different kinds of applications and systems. Java runs on all major operating systems and devices. You can find applications developed in Java on your laptop, phone, and game console.
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Os : Ubuntu 20.04 LTS (focal fossa) 64Bit        ||         Linux Mint 19.3 Tricia
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lsb_release -cd  ; apt install -y build-essential net-tools curl git software-properties-common

apt update
apt install openjdk-11-jdk openjdk-11-jdk-headless openjdk-11-jre openjdk-11-jre-headless -y
update-alternatives --config java

Setting Up Environment Variables :
nano /etc/profile.d/java.sh
export PATH=$PATH:/usr/lib/jvm/java-11-openjdk-amd64/bin/
export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64/
export J2SDKDIR=/usr/lib/jvm/java-11-openjdk-amd64/
source /etc/profile.d/java.sh
java -version ; echo $JAVA_HOME ; which java

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