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BLUEJ

A free Java Development Environment designed for beginners, used by millions
worldwide. Find out more...

"One of my favourite IDEs out there is BlueJ"
— James Gosling, creator of Java.

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CREATED BY

SUPPORTED BY

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DOWNLOAD AND INSTALL

VERSION 5.2.1, RELEASED 10 OCTOBER 2023 (FIX INSTALLER ISSUES, SEE MORE)

WINDOWS

Requires 64-bit Windows, Windows 7 or later. Also available: Standalone zip
suitable for USB drives.

MAC OS X

Requires OS X 10.12 or later.

UBUNTU/DEBIAN

Requires 64-bit, Debian buster or Ubuntu 18.10 or later. There is also a flatpak
available (maintained by someone else).

OTHER

Please read the Installation instructions. (Works on most platforms with
Java/JavaFX 17 support).

Note: BlueJ now uses Java 11+, which requires a 64-bit operating system, which
95+% of users will have.
For 32-bit operating systems, download BlueJ 4.1.4 instead.

Download previous versions or old source code archives.
The source code for BlueJ is now available on Github.
The copyright for BlueJ is held by M. Kölling and J. Rosenberg.
BlueJ is available under the GNU General Public License version 2 with the
Classpath Exception (full license text, licenses for third party libraries).


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USEFUL RESOURCES

TEXTBOOK

"Objects First with Java: A Practical Introduction Using BlueJ" is a textbook
co-written by the developers of BlueJ and has sold hundreds of thousands of
copies worldwide.

TEACHER SUPPORT

Our free Blueroom website offers teaching resources and the chance to engage
with other educators using BlueJ around the world.

DOCUMENTATION

Tutorials and reference materials for working in BlueJ.

EXTENSIONS

We have several extensions available that add to BlueJ's base functionality.

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TECHNICAL SUPPORT

If you have a technical issue with the BlueJ software itself (e.g. installation
problems, failing to start, etc), you can view our FAQ, contact our technical
support or view our bug database.


ACKNOWLEDGEMENTS

The BlueJ project is supported by Oracle. We benefit from an open source licence
for JProfiler (a Java profiler).