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BlueJ is an integrated Java environment specifically designed for introductory teaching.

BlueJ supports:

  • Fully integrated environment
  • Graphical class structure display
  • Graphical and textual editing
  • Built-in editor, compiler, virtual machine, debugger, etc.
  • Easy-to-use interface, ideal for beginners
  • Interactive object creation
  • Interactive object calls
  • Interactive testing
  • Incremental application development

What's New

Version 3.1.1:

Bug fixes:

  • Fixed: class type parameters not shown in class diagram
  • Fixed: issues with highlighting, pasting and deleting text in codepad
  • Added: message displayed when no project open, for clarification
  • Fixed: Inspectors could not be moved by dragging them on Mac OS X


  • OS X 10.7.3 or later

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BlueJ User Discussion

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Syed Ali Member IconComment+42
Syed Ali

Version 3.0.5 crashes on my Power Mac G5 1.6Ghz running OS X 10.5.8

I can run version 3.0.4 without any issues. Is anyone else having this problem ?

I know the binary is still PPC compatible.

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Version 3.0.5
Anonymous Member IconReview

Just *LOVE* the new BlueJ. cant wait to try the generics features - when will we get the new Java with them on MacOS???

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Version 2.0beta
Anonymous Member IconReview

Whenever I try to run a main() method, the program (BlueJ) doesn't respond and just freezes. I am realy concerned about this because if I can't get the Mac version of BlueJ working, I need to work on the PC version and that is the last thing I want to do; use a PC. Can somebody please give me any suggestion on this?

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Version 1.2.2
Anonymous Member IconReview

This is exactly what I'm looking for!
I got started on Java recently, and
this environment is just great. Plp,
read the tutorial, and yu're flying.

Reply0 replies
Version 1.2.2
There are no Ratings for this App yet.
> 5 3


Current Version (3.x)


Downloads 16,130
Version Downloads 433
Type Development / Java
License Free
Date 27 Jan 2014
Platform Intel 64 / OS X
Price Free
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