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1) Update and Upgrade OS |
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The current version of java-8 may vary. Please adapt the following settings to the current version |
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sudo apt upgradeupdate sudo apt updateupgrade sudo reboot -p -f |
download Oracle JDK (Example filename jdk-8u241-linux-x64.tar.gz) and upload the file /opt/Download
2) Creating workspace
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sudo mkdir /usr/lib/jvm |
3) Extracting JDK
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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
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sudo vi /etc/environment |
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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 location
Enter the following commands to inform the system of the Java location.
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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.
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update-alternatives --list java update-alternatives --list javac |
7) Validate
Restart
Test the installation
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java -version java -version sudo reboot -f |
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