default-java java-21-openjdk-amd64 Ubuntu's JDK install folder The default-java folder is a symbolic link to the actual location of the JDK install on Ubuntu. When you reference the JDK install ...

How to install Java on your computer To run Java apps, open JAR files or compile some source code into bytecode you’ll need to install Java. To download and install Java on Windows, MacOS or Ubuntu, ...

To develop or run Java applications, you first need to install Java to act as an interpreter. For this, you’ll need the Java Development Kit, or JDK.