In this tutorial, we’ll be showing you how to install Oracle’s Java 8 programming language specifically onto a CentOS 7 server. This simple object-oriented language is used for many of the applications and websites you come across today. Let’s jump right in!
- Open the terminal and login as root. If you are logged in as another user, you will need to add sudo before each command.
- Working on a Linux CentOS 7 server
- No installations of previous Java versions
Installing Java 8 on CentOS 7
Step 1: Update
As a matter of best practice we’ll update before installing any new programs:
yum -y update
Step 2: Install Java 8
yum install java-1.8.0-openjdk
Step 3: Verify Java is Installed
openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)
Set Java’s Home Environment
Step 1: Find Java’s Path
Let’s set the JAVA_HOME variable, using the following command will give us a path so we can set the variable.
update-alternatives --config java
You’ll see a prompt to “Enter to keep the current selection[+], or type selection number:”, if you had multiple Java version you could set the default here, but all we need is the path of Java so we can exit pressing enter. The highlighted area is the path we will need to copy/paste into our .bash_profile file.
*+ 1 java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-126.96.36.199.b12-1.el7_6.x86_64/jre/bin/java)</code?
Step 2: Setting Java’s Path in Your Environment
After copying your Java’s path, open the .bash_profile with your text editor.
Export your Java path into the .bash_profile by adding the following to the bottom of the file. (Your path may look different from mine, and it’s not important that they vary.)
Refresh the File:
When you use the JAVA_HOME variable you’ll now be able to see the path you set.