About
BlueJ is a free Java Development Environment designed for beginners and used by millions of people worldwide. It is available for macOS, requiring macOS 11 or later, with a separate version for Macs with Intel processors (2021 and earlier). BlueJ is also available for Windows and Ubuntu/Debian, and the site notes that it works on most platforms with Java/JavaFX 21 support.
The website highlights BlueJ's use in education. A textbook co-written by its developers, "Objects First with Java: A Practical Introduction Using BlueJ," has sold hundreds of thousands of copies. The free Blueroom website offers teaching resources and a community of educators using BlueJ, and the project also provides documentation, tutorials, and extensions that add to its base functionality.
BlueJ is available under the GNU General Public License version 2 with the Classpath Exception, and its source code is on GitHub. Technical support, an FAQ, and a bug database are available for installation or startup problems. The site also notes that BlueJ requires a 64-bit operating system, and that 32-bit users should download BlueJ 4.1.4 instead.
What's new
All release notesHomebrew cask bluej 6.0.1 (sha256 fd2a70a981a9e801f98efc9423a3c48e014c80e180612f37e6223e7bda9c45d2).