A free Java Development Environment designed for beginners

BlueJ for Mac

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BlueJ 4.2.1

  -  236 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of BlueJ 4.2.1.


For those interested in downloading the most recent release of BlueJ for Mac or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download BlueJ 4.2.1

  • BlueJ 4.2.1 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    BlueJ 4.2.1 Screenshot 1
  • BlueJ 4.2.1 Screenshot 2
  • BlueJ 4.2.1 Screenshot 3

What's new in this version:

- Fixed a window positioning issue that could cause BlueJ windows to appear off-screen (and thus seem to never appear)
- Stopped the "File changed on disk" dialog from popping up again when dismissed, and made it less likely to appear in cases which might be caused by slow network storage
- Fixed an issue with not recognising JavaFX installed via Ubuntu package

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