We hope this tutorial was enough Helpful.Loaded: loaded (/usr/lib/systemd/system/rvice enabled vendor preset: enabled)Īctive: active (running) since Thu 19:56:05 WIB 37min agoĬGroup: /system.slice/rvice How to install Apache Maven on Ubuntu 18.04.You might want to check the following guides: You have successfully installed Java8 and Java 11 on your Ubuntu 18. 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 update the /etc/environment file as below: JAVA_HOME='/usr/lib/jvm/java-11-openjdk-amd64'Ġ2- Finally, verify that the JAVA_HOME environment variable was correctly set: $ echo $JAVA_HOME Setting the JAVA_HOME Environment Variable Press to keep the current choice, or type selection number:Ġ3- Finally, enter the number of the version you want to use as the default and press Enter. * 0 /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1111 auto modeġ /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1111 manual modeĢ /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manual mode There are 2 choices for the alternative java (providing /usr/bin/java). So, if you installed multiple Java versions on your Ubuntu system, you can use the update-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 64-Bit Server VM (build 11.0.7+10-post-Ubuntu-2ubuntu218.04, mixed mode, sharing)Ġ1- If your application requires Java 8, so, you can install it by excuting the below command: $ sudo apt update OpenJDK Runtime Environment (build 11.0.7+10-post-Ubuntu-2ubuntu218.04) Installing OpenJDK 11Ġ1- Run the following command as root or user with sudo privileges to install Java 11: $ sudo apt updateĠ2- Once the installation is complete, you can verify it by checking the Java version: $ java -version In this tutorial, we will explain how to install one or more Java ( OpenJDK) versions on Ubuntu 18.04 and how to set the default Java via update-alternatives command.

Java is one of the most popular programming languages used to build different types of applications and systems.

Install openjdk 7 ubuntu 18.04