![]() ![]() ![]() For this reason, OpenJDK 11 is the recommended version for developing production applications. While there are many available versions of OpenJDK, version 11 is the latest Long-Term-Support (LTS) release as of the time of this guide’s publication. OpenJDK and Java SE are equivalent JDKs that include a Java runtime environment (JRE) and tools for developing and compiling Java applications. OpenJDK is the free and open-source implementation of the Oracle Java Standard Edition (Java SE) Development Kit. This guide will show you how to install the Open Java Development Kit (OpenJDK) 11 on Ubuntu 20.04. Software written in Java can be compiled and run on any system, making Java a versatile platform that can be used to create anything from software to basic web applications. Follow these steps:Ĭreate a new file called HelloWorld.java using a text editor: $ nano HelloWorld.Java is one of the world’s most popular programming languages. To ensure that Java is functioning correctly on your system, let’s test it with a simple “Hello, World!” program. You can replace /path/to/java/version with the path to the Java version you want to use. $ sudo update-java-alternatives -set /path/to/java/version ![]() Here is an example of how to use it: $ sudo update-java-alternatives -list To install it Run: $ sudo apt-get install java-common You can use it to switch between different Java versions installed on your system. It is part of the java-common package and is used to update the symbolic links from /usr/bin/java and /usr/bin/javac to point to the Java runtime or development kit of your choice. Update-java-alternatives is a command-line tool that updates all alternatives belonging to one runtime or development kit for the Java language. bashrc file and update the environment variables. To apply the changes, run the following command: $ source ~/.bashrc If you have installed Java in a different location, make sure to modify the path accordingly. This line assumes that the Java installation directory is /usr/lib/jvm/default-java. bashrc file using a text editor: $ nano ~/.bashrcĪdd the following line at the end of the file: $ export JAVA_HOME="/usr/lib/jvm/default-java" To set the JAVA_HOME variable, follow these steps: This variable specifies the location of the Java installation directory. To ensure that Java is correctly configured on your system, it is recommended to set the JAVA_HOME environment variable. Step 5: Set the Java Home Environment Variable Method 1 : Manually To install Java 8, run the following command: $ sudo apt-get install openjdk-8-jdkĪfter executing the respective command, the specified Java version will be downloaded and installed on your Ubuntu system. To install Java 11, run the following command: $ sudo apt-get install openjdk-11-jdk Install Java 8 Here are the steps to install Java 11 or 8: Install Java 11 If you require a specific version of Java, Ubuntu also provides the option to install different versions using the apt-get package manager. OpenJDK 64-Bit Server VM (build 11.0.12+7-Ubuntu-0ubuntu1.20.04, mixed mode, sharing) Step 4: Install Specific Java Versions OpenJDK Runtime Environment (build 11.0.12+7-Ubuntu-0ubuntu1.20.04) If Java is installed correctly, you will see output similar to the following: openjdk version "11.0.12" To do this, run the following command: $ java -version Once the installation is complete, you can verify whether Java has been installed successfully by checking the version. This command will download and install the default version of OpenJDK available for your Ubuntu distribution. To install OpenJDK using the apt-get package manager, use the following command: $ sudo apt-get install default-jdk Ubuntu provides OpenJDK as the default Java Development Kit (JDK) in its package repository. This command will refresh the package lists on your system and retrieve information about the latest available packages. Open a terminal window and run the following command: $ sudo apt update The first step is to ensure that your package repository is up to date. Administrative access to the system (sudo privileges).Prerequisitesīefore we proceed with the installation, make sure you have the following prerequisites: ![]() By following the steps outlined below, you’ll be able to install Java and start developing or running Java applications on your Ubuntu system. If you are an Ubuntu 18.04, 20.04 or 22.04 user and want to install Java using the apt-get package manager, this guide will walk you through the process. Java is a popular programming language that is widely used for building various applications and software. ![]()
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