Cette procédure installera la version 10 sous Ubuntu Bionic 18.04 (même si le paquet est openjdk-11-jdk). For more information on using OpenJDK, consult the OpenJDK Development Guide. Pour installer la plate-forme dexécution JRE dOpenJDK, il suffit dinstaller les paquets default-jre et son greffon pour les navigateurs internet: icedtea-plugin sous Ubuntu 18.04, sous Ubuntu 20.04 le paquet nexiste plus, il faut installer icedtea-netx. Try executing the script on the JRE and compiling it using the JDK. Write a short test script to validate the OpenJDK installation. After downloading the program, it is necessary to set a few environment variables to ensure smooth operation. OpenJDK for Ubuntu 22.04 can be installed using apt. The JDK includes the JRE, but the JRE can be downloaded separately. OpenJDK includes a JDK for compiling Java code and a JRE for running Java programs. How to install OpenJDK JRE How to install Oracle HotSpot JRE. OpenJDK is a free open-source implementation of Oracle Java, licensed under GPL version 2. You may also wish to set the timezone, configure your hostname, create a limited user account, and harden SSH access.Ī Summary of How to Install and Test OpenJDK on Ubuntu 22.04 See our Getting Started with Linode and Creating a Compute Instance guides.įollow our Setting Up and Securing a Compute Instance guide to update your system. If you have not already done so, create a Linode account and Compute Instance. The remaining branches have all reached the end-of-life stage.įor more information about OpenJDK, see the OpenJDK website. Release 11 is still supported for several years, but users should consider upgrading to a newer branch. The most widely-used Long-term support (LTS) branches of OpenJDK are release 11 and release 17. Users who only want to run Java programs only require the JRE. The JRE is much less efficient at running Java files than applications because it must compile the source code first. It can also run Java files, but cannot convert these files into programs. The JRE interprets Java bytecode into lower-level code. It bundles the Java Virtual Machine (JVM) together with the Java Class Library (JCL) and other files.
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