JDoodle is an online tool that serves as a compiler, editor, and integrated development environment (IDE) for various programming languages, including but not limited to Java, C, C++, PHP, Perl, Python, and Ruby.

This platform allows users to run their programs online instantly, eliminating the need for setting up and maintaining a local environment. Beyond just coding, users can also save their work and share it with others, potentially facilitating collaborative coding efforts.

JDoodle provides a straightforward and simple way to compile and run programs online which is beneficial for code education, quickly testing out code snippets, or conducting interviews that require coding exercises.

However, it's important to note that the full functionality of JDoodle requires JavaScript to be enabled for the tool to perform as expected.