* Step Two: Install BlueJ development environment
Bluej is a free Java Development Environment designed for beginners, used by millions worldwide. The latest distribution files for the BlueJ are available at its official website (http://www.bluej.org/) for free download.
Upon completion of BlueJ installation, let's move the Step Three！
* Troubleshooting
Make sure to choose the distribution file for your operating system.
If you have any problem during the BlueJ installation, check BlueJ Frequently Ask Questions