Installing Java-8
Ref: install-oracle-jdk-in-ubuntu
| Step | Action |
|---|---|
1) Update and Upgrade OS | sudo apt upgrade sudo apt update sudo reboot -p -f download Oracle JDK (Example filename jdk-8u241-linux-x64.tar.gz) and upload the file /opt/Download |
2) Creating workspace | sudo mkdir /usr/lib/jvm |
3) Extracting JDK | cd /usr/lib/jvm sudo tar xzf /opt/Download/jdk-8u241-linux-x64.tar.gz sudo chown -R root:root jdk1.8.0_241 |
3) Setting up environment variables | sudo vi /etc/environment /etc/environnement PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/lib/jvm/jdk1.8.0_241/bin:/usr/lib/jvm/jdk1.8.0_241/db/bin:/usr/lib/jvm/jdk1.8.0_241/jre/bin" J2SDKDIR="/usr/lib/jvm/jdk1.8.0_241" J2REDIR="/usr/lib/jvm/jdk1.8.0_241/jre" JAVA_HOME="/usr/lib/jvm/jdk1.8.0_241" |
5) Configuring the Java locationEnter the following commands to inform the system of the Java location. | sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.8.0_241/bin/java" 0 sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.8.0_241/bin/javac" 0 sudo update-alternatives --set java /usr/lib/jvm/jdk1.8.0_241/bin/java sudo update-alternatives --set javac /usr/lib/jvm/jdk1.8.0_241/bin/javac |
6) To check the setup,enter the following commands and make sure they indicate the location of java and javac as shown in the previous step. | update-alternatives --list java update-alternatives --list javac |
7) ValidateRestart Test the installation | java -version java -version sudo reboot -f |
