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Step-by-Step Guide to Installing Java 21 on Ubuntu
Introduction:
Java, the versatile programming language and runtime environment, continues to evolve with each version release. Java 21 brings new features, optimizations, and enhancements for developers. If you’re an Ubuntu user eager to harness the power of Java 21, this guide will walk you through the installation process step by step.
Step 1: Prerequisites
Before installing Java 21, ensure your Ubuntu system is up to date. Open a terminal window and run the following commands:
sudo apt updatesudo apt upgradeThese commands will update the package lists and upgrade installed packages to their latest versions.
Step 2: Install Java 21
sudo apt install openjdk-21-jdk -yStep 3: Verify the installation by checking the Java version:
java -versionYou should see output similar to the following:
openjdk version "21.0.2" 2024-01-16
OpenJDK Runtime Environment (build 21.0.2+13-Ubuntu-123.10.1)
OpenJDK 64-Bit Server VM (build 21.0.2+13-Ubuntu-123.10.1, mixed mode, sharing)If you see similar output, congratulations! Java 21 is now installed on your Ubuntu system.
Setting Default Java Version (Optional)
If you have multiple Java versions installed on your system, you may want to set Java 21 as the default version. You can do this using the update-alternatives command:
sudo update-alternatives --config javaThis command will present you with a list of installed Java versions. Enter the selection number corresponding to Java 21 to set it as the default.
Conclusion:
In this guide, we’ve walked through the process of installing Java 21 on Ubuntu. With Java 21 installed, you’re ready to leverage its new features and enhancements in your Java development projects. Whether you’re a seasoned Java developer or just getting started, Java 21 brings exciting possibilities for creating powerful and innovative applications on the Ubuntu platform.
