JDoodle is a free online coding platform that supports various programming languages, including Java. It is an excellent tool for coders who want to swiftly compile and execute their code without the need for a full-scale Integrated Development Environment (IDE) on their computer.

To use JDoodle to compile and run Java code:

1. Visit the JDoodle website (https://www.jdoodle.com/).

2. From the “Select Language” dropdown menu, opt for “Java”.

3. In the text editor provided, type or paste in your Java code.

4. Click the “Execute” button to compile and run your code. The results will be displayed in the output section below.