Install Oracle Java 8 on Ubuntu, Linux Mint, Elementary OS

In this tutorial, I will show you how to install Oracle Java 8 on Ubuntu based Linux distributions, including  Ubuntu 16.04/14.04, Linux Mint, Elementary OS, from PPA (Personal Package Archive). The following will be installed on your system once you finish this tutorial.

• Java JDK (Java Development Kit)
• JRE (Java Runtime Environment)
• Java browser plugin

Programs written in Java such as phpStorm can run on any operating system that has Java installed.

Install Oracle Java 8 on Ubuntu/Linux Mint/Elementary OS

Run the following 3 commands one by one in your terminal to add the PPA and install Oracle Java8.

sudo add-apt-repository ppa:webupd8team/java

sudo apt-get update

sudo apt-get install java-common oracle-java8-installer

The 3rd command will install the Oracle Java8 installer and itself will download Oracle Java 8 binary and then install it on your system. During the installation phase, you need to accept the Oracle binary code license terms.

Check Version Number

Once the installation is complete, we can check Java version.

java -version

Check Java compiler version

javac -version

Set Environment Variable.

Run the following command to set environment variable.

sudo apt-get install oracle-java8-set-default

Once installed, there will be two new files under /etc/profile.d/ directory: jdk.csh and jdk.sh. These two files are shell scripts that contains commands to set 5 environment variables.

cat /etc/profile.d/jdk.sh

Output:

export J2SDKDIR=/usr/lib/jvm/java-8-oracle
export J2REDIR=/usr/lib/jvm/java-8-oracle/jre
export PATH=$PATH:/usr/lib/jvm/java-8-oracle/bin:/usr/lib/jvm/java-8-oracle/db/bin:/usr/lib/jvm/java-8-oracle/jre/bin
export JAVA_HOME=/usr/lib/jvm/java-8-oracle
export DERBY_HOME=/usr/lib/jvm/java-8-oracle/db

We need to reload /etc/profile to let these environment variables to take effect.

source /etc/profile

Now you can check these 5 environment variables like below:

echo $JAVA_HOME

As you can see, it’s easy to install Oracle Java 8 on Ubuntu, Linux Mint and Elementary OS once you read this tutorial. Comments, questions or suggestions are always welcome. If you found this post useful, ? please share it with your friends on social media! Stay tuned for more Linux tutorials.