How to Install Java 11 on CentOS 7/6 & Fedora 29-25

The Oracle team has discontinued the security updates for Java 8. Also released the latest Java 11 LTS version. Java 11 has been released for general availability with the many featured enhancements. You can read the details here. This article will help you to install Oracle Java 11 on CentOS 7/6, RHEL 7/6 and Fedora 29/28/27/26/25 system.

Step 1 – Download Java 11

Download the latest Java SE Development Kit 11 LTS release from its official download page or use following commands to download from command line.

wget --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie"   "http://download.oracle.com/otn-pub/java/jdk/11.0.2+9/f51449fcd52f4d52b93a989c5c56ed3c/jdk-11.0.2_linux-x64_bin.rpm"

Step 2 – Install Java 11

After extracting archive file use alternatives command to install it. alternatives command is available in chkconfig package.

yum localinstall jdk-11.0.2_linux-x64_bin.rpm    ### CentOS systems 
dnf localinstall jdk-11.0.2_linux-x64_bin.rpm    ### Fedora systems 

alternatives --config java

There are 2 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
 + 1           /opt/jdk1.8.0_201/bin/java
*  2           /usr/java/jdk-11.0.2/bin/java

Enter to keep the current selection[+], or type selection number: 2 

According to the above screenshot, there are 3 versions installed. Java 11 is listed on number 2, So input numeric 2 and press Enter. Now Java 11 is configured as default Java on my CentOS and Fedora system.

Step 3 – Check Java Version

Check the installed Java version on your system using the following command.

java -version

java version "11.0.2" 2019-01-15 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.2+9-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.2+9-LTS, mixed mode)

Step 4 – Setup Java Environment Variables

Most of the Java-based applications uses environment variables to work. Set the Java environment variables using following commands

• Setup JAVA_HOME Variable

export JAVA_HOME=/usr/java/jdk-11.0.2

• Setup PATH Variable

export PATH=$PATH:/usr/java/jdk-11.0.2/bin

Also put all above environment variables in /etc/environment file for auto loading on system boot.