![]() However, if you require a specific version or need Oracle’s JDK, you can also download and install it manually from Oracle’s website or other trusted sources following their installation instructions. The default OpenJDK packages provided by Ubuntu are usually sufficient for most use cases. If you want to learn how to use Java features that are available today, head over to dev.java. Once installed, verify the Java version using the following command: java -version. Download and install the latest open-source JDK. This is the easiest way to install the JDK using the apt package manager: apt install openjdk-17-jdk openjdk-17-jre. With these steps, you should now have Java installed on your Ubuntu system. Ubuntu 20.04’s default repository included Java 17. Select the desired Java version from the list and press Enter. Sudo update-alternatives –config java sudo update-alternatives –config javac For example, to set Java 11 as the default version: ![]() Optional: Setting the Default Java Version: If you have multiple versions of Java installed on your system, you can set the default version using the update-alternatives command. Create a Development Tools directory in your home directory, called DevTools (or use an appropriate name): 2. OpenJDK has separated packages for JDK (Java Development Kit) for developing Java applications and JRE (Java Runtime Environment) for running Java applications. These commands will display the installed Java Runtime Environment (JRE) and Java Development Kit (JDK) versions respectively. Install Java JDK on Ubuntu 22.04 / Ubuntu 20.04 Install OpenJDK 18 on Ubuntu 22.04 / 20.04. ![]()
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