![]() ![]() In this tutorial, you learned how to install Java Runtime Environment ( JRE) and the Java Developer Kit ( JDK) on Ubuntu 20.04 and Ubuntu 18.04. ![]() You will get the following output: /usr/lib/jvm/java-11-openjdk-amd64 Verify that the environment variable is set: $ echo $JAVA_HOME Install JRE in Ubuntu and Linux Mint (for running Jar applications) Install OpenJDK in Ubuntu and Linux Mint (for compiling and running Java programs) Install. Save the file and reload the file to apply the changes to your current session: $ source /etc/environment Then open /etc/environment file using nano text editor: $ sudo nano /etc/environmentĪdd the following line at the end of the file, make sure to replace the location of your Java installation path. You will get the following output: /usr/lib/jvm/java-11-openjdk-amd64/bin/java To set the JAVA_HOME environment variable, first, discover where Java is installed by running the following command. Most of the Java-based software programs use the JAVA_HOME environment variable to discover the Java installation location. You don't need to uninstall openjdk-11-jdk if you already have installed it. Setting the JAVA_HOME Environment Variable in Ubuntu The oracle-java11-installer package automatically installs the oracle-java11-set-default package, which sets Oracle Java 11 as default (including setting the JAVAHOME environment variable, which requires a session restart). You will get the following output: javac 11.0.10 $ sudo apt install default-jdkĪfter installation, verify the JDK installation by checking the version as shown. To install the JDK, run the following command. deb file to install it with Ubuntu Software app or open the terminal, change directories using cd to the folder that contains the. Once JRE installed, you might also need the JDK ( Java Development Kit) in order to compile and run a Java-based application. OpenJDK 64-Bit Server VM (build 11.0.10+9-Ubuntu-0ubuntu1.20.04, mixed mode, sharing) OpenJDK Runtime Environment (build 11.0.10+9-Ubuntu-0ubuntu1.20.04) You will get the following output: openjdk version "11.0.10" Once Java installed, you can verify the installation with: $ java -version Now run the following command to install the default OpenJDK 11, which will provide Java Runtime Environment ( JRE). You can follow below steps to install Oracle 11 on Ubuntu 18.04. Sudo apt install openjdk-14-jre-headless # version 14.0.2+12-1~20.04 To install Oracle Java 11, you should use Linux Uprising PPA. ![]() Sudo apt install openjdk-8-jre-headless # version 8u282-b08-0ubuntu1~20.04 Sudo apt install default-jre # version 2:1.11-72 Command 'java' not found, but can be installed with: This guide will show you how to install the Open Java Development Kit (OpenJDK) 11 on Ubuntu 18.04. If Java is not currently installed, you will get the following output. ![]()
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