You might want to check the following guides: You have successfully installed Java8 and Java 11 on your CentOS 8. The JAVA_HOME environment variable is used by some Java applications to determine the Java installation location and specify which Java version should be used to run the application.Ġ1- To set the JAVA_HOME variable, you can add a script inside the /etc/profile.d directory as below: JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.8_1.x86_64"Ġ2- Now, load the new environment variables by typing: $ source /etc/profile.d/java.shĠ3- Finally, verify that the JAVA_HOME environment variable was correctly set: $ echo $JAVA_HOME *+ 2 java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.8_1.x86_64/jre/bin/java)Įnter to keep the current selection, or type selection number:Ġ3- Finally, enter the number of the Java version you want to use as the default and press Enter Setting the JAVA_HOME Environment Variable So, if you installed multiple Java versions on your CentOS system, you can use the alternatives command to set which Java version will be used by default.Ġ1- To check what Java version is set as the default one, type: $ java -versionĠ2- If you want to change the default version, use the command alternatives to list all the installed Java versions.
OpenJDK 64-Bit Server VM (build 25.252-b09, mixed mode) OpenJDK Runtime Environment (build 1.8.0_252-b09)
#INSTALL OPENJDK 11 CENTOS 7 INSTALL#
OpenJDK 64-Bit Server VM 18.9 (build 11.0.7+10-LTS, mixed mode, sharing)Ġ1- If your application requires Java 8, so, you can install it by excuting the below command: $ sudo dnf install java-1.8.0-openjdk
OpenJDK Runtime Environment 18.9 (build 11.0.7+10-LTS) Installing OpenJDK 11 on CentOSĠ1- To install the OpenJDK 11 on CentOS 8, run the following command as root or user with sudo privileges: $ sudo dnf install java-11-openjdkĠ2- Once the installation is complete, you can verify it by checking the Java version: $ java -version
#INSTALL OPENJDK 11 CENTOS 7 HOW TO#
In this tutorial, we will explain how to install one or more Java ( OpenJDK) versions on CentOS 8 and how to set the default Java via alternatives. There are 2 programs which provide 'java'. Run the above command, select the version you want to set, I've set 1 here. Java is one of the most popular programming languages used to build different types of applications and systems. Get all the Java configurations available in your machine.