But to keep it simple we're using Adopt Open JDK once again. They might even offer their own installer file. You can get your compressed OpenJDK from a number of different vendors such as Microsoft, Red Hat, Intel or anyone offering their fork of OpenJDK. Still Pretty Easy, Mostly Manual Mode – for Windows, macOS, and Linux That's it, the open-source community saves the day again. Sudo apt install openjdk-13-jre-headless # installs for java 13 Sudo apt install openjdk-8-jre-headless # installs for java 8 Your OS will very likely have its own OpenJDK package available in the repository manager.įor Ubuntu/Debian, the package names are usually named like openjdk-jre-headless. This method also needs admin access, of course. Very Easy Semi-Automatic Mode – for Linux Remember to install ALL features, as it won't work out of the box if you don't allow the installer to set JAVA_HOME. Look for your OS, choose the packaged installer (. You'll be redirected to a page with a list of install links. Head over to the community-driven, Eclipse Foundation-supported Adopt Open JDK website to get the link for your installer (if you are in doubt, just go with OpenJDK 11 LTS on HotSpot JVM).Īlso, Eclipse is the main open-source Java IDE in case you didn't know. If you are in a hurry and just want a plug-and-play install with an easy uninstaller and automatic setup, that's fine – I won't judge. Keep in mind that this will require administrator access. How to Install OpenJDK Very Easy Semi-Automatic Mode – for Windows and macOS Here, you'll learn how to install OpenJDK on Windows, Mac, and Linux in a few different ways. Since this is the easier and cheaper way, it's the one we're going to be using in this tutorial. OpenJDK is licensed under GPL-2.0, and it consists of a Java Virtual Machine and a java-bytecode compiler. Java and the JVM (Java’s virtual machine) are required for many kinds of software, including Tomcat, Jetty, Glassfish, Cassandra and Jenkins.In a nutshell, there are two coexisting branches of Java: the proprietary, closed-source Oracle Java and the community-maintained open-source OpenJDK. In this guide, you will install various versions of the Java Runtime Environment (JRE) and the Java Developer Kit (JDK) using apt. You’ll install OpenJDK as well as the official JDK from Oracle. You’ll then select the version you wish to use for your projects. One Ubuntu 22.04 server set up by following the the Ubuntu 22.04 initial server setup guide tutorial, including a sudo non- root user and a firewall.Īn installation of Java comes with two main components.When you’re finished, you’ll be able to use the JDK to develop software or use the Java Runtime to run software. The JDK provides essential software tools to develop in Java, such as a compiler and debugger. The JRE is used to actually execute Java programs. Furthermore, there are two main installation options of Java to choose from. OpenJDK is the open-source implementation of Java and comes packaged with Ubuntu. Oracle JDK is the original version of Java and is fully maintained by Oracle, the developers of Java.īoth of these versions are officially recognized by Oracle. Both are also developed by Oracle, but OpenJDK has the addition of community contributions due to its open-source nature. However, starting with Java 11 the two options are now functionally identical as detailed by Oracle. The choice between which to install comes down to choosing the appropriate licensing for your circumstance. Additionally, OpenJDK has the option to install the JRE separately, while OracleJDK comes packaged with its JRE.
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