Tag: Oracle Java

Java is a programming language and computing platform. It was first released by Sun Microsystems in 1995. Many programs and scripts that require Java to run it, but usually Java are not installed by default on a VPS or Dedicated Server.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation JRE (Java Runtime Environment) and JDK (Java Development Kit) on Ubuntu 17.04 Zesty.

Install Oracle Java on Ubuntu 17.04 Zesty

Step 1. First make sure that all your system packages are up-to-date by running these following apt-get commands in the terminal.

sudo apt-get update
sudo apt-get upgrade

Step 2. Installing Oracle Java.

Installing Java in Ubuntu 17.04 is almost similar to the installing Java in the previous version of Ubuntu such as Ubuntu 16.04:

apt-get install default-jre
apt-get install default-jdk

Another alternative Java install is with Oracle JRE and JDK. However, we would need to install additional repositories for a proper installation:

add-apt-repository ppa:webupd8team/java
apt-get update
apt-get install java-common oracle-java8-installer

Verify Installed Java version.

java -version

Result:

java version "1.8.1_74"
Java(TM) SE Runtime Environment (build 1.8.1_74-b02)
Java HotSpot(TM) 64-Bit Server VM (build 25.74-b02, mixed mode)

Step 3. Setup JAVA_HOME on Ubuntu 17.04.

Since many programs now days need a JAVA_HOME environment variable to work properly. We will need to find the appropriate path to make these changes. With the following command, you can view your installs and their path:

sudo update-alternatives --config java
sudo nano /etc/profile

Now that you are in the user profile file, add the following code, along with the Path of your installation from the previous step, to the bottom. ( Example: JAVA_HOME=”YOUR_PATH”):

export JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-1.8.1.51-1.b16.el7_1.x86_64"

Reload the file so all your changes could take effect with the following command:

source /etc/profile

Verify that your implementations are correct with the following command:

echo $JAVA_HOME

Congratulation’s! You have successfully installed Java. Thanks for using this tutorial for installing Oracle Java (JRE or JDK) on Ubuntu 17.04 Zesty system. For additional help or useful information, we recommend you to check the official Java web site.