Once installed, we can check Java version: java -version Testing Java Install Java 17: sudo apt install -y openjdk-17-jdk Install JavaĮxecute the following command to add the OpenJDK repository: sudo add-apt-repository -y ppa:openjdk-r/ppa This tutorial shows how to install Java JDK 17 (OpenJDK) on Ubuntu 20.04. Java 17 is a long-term support (LTS) release. The Java Development Kit (JDK) is full-featured package that includes JRE, debugging and development tools which allows to build and run Java applications. The Java Runtime Environment (JRE) is a package which consists of Java Virtual Machine (JVM) and allows to run Java applications. A commercial license is required for Oracle JDK. OpenJDK is an open-source implementation of the Java. These Java implementations is based on same specification. OpenJDK and Oracle JDK are two implementations of the Java.
If you would prefer to set the JAVA_HOME (or JRE_HOME) variable via the command line: Set the JAVA_HOME variable via the command line If the changes don't take effect after reopening the command window, restart Windows. You'll need to close and re-open any command windows that were open before you made these changes, as there's no way to reload environment variables from an active command prompt. In the Variable Value field, enter your JDK or JRE installation path.
Click the Environment Variables button.Windows 10 – Search for Environment Variables then select Edit the system environment variables Windows 8 – Go to Control Panel > System > Advanced System Settings Windows 7 – Right click My Computer and select Properties > Advanced
You can also type where java at the command prompt. If you didn't change the path during installation, it'll be something likeĬ:\Program Files\Eclipse Adoptium\jdk-11.0.17.8-hotspot\ or
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