![]() 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 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. ![]() Setting the JAVA_HOME Environment Variable in Ubuntu 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. 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" The easiest way to install and update your. Once Java installed, you can verify the installation with: $ java -version Download openjdk-8-jdk 8u372-gaus1-0ubuntu120.04, 3,974.4 kB, 4,241.0 kB, list of files 8u252-b09-1ubuntu1, 3,406.7 kB, 3,961.0 kB, list of files. The Eclipse Installer 202306 R now includes a JRE for macOS, Windows and Linux. For JRE run the following commands to install. sudo apt update sudo apt install openjdk-17-jdk. Now run the following command to install the default OpenJDK 11, which will provide Java Runtime Environment ( JRE). The easiest and quickest way is installation OpenJDK 17 on Ubuntu 22.0420.0418.04 from OS upstream repositories. (replace the word (version)with your Java version. To check the setup before uninstalling Java. Sudo apt install openjdk-14-jre-headless # version 14.0.2+12-1~20.04 To uninstall Oracle Java 7, just press Ctrl + Alt + T on your keyboard to open Terminal. 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: If Java is not currently installed, you will get the following output.
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