Java is a high-class object-oriented programming language that lets programmers or administrators run everywhere without recompiling. Java code is compiled and can run on any Java virtual machine regardless of the underlying computer architecture. The Oracle corporation maintains Java and has automatic garbage collection, which means that it automatically manages the memory and helps the programmer avoid doing that task manually. Learning how to install Java 21 on Ubuntu 24.04 is a straightforward process that may take up to 15 minutes. Let’s get started!