| BlueJ | |
|---|---|
| BlueJ Version: | 5.0.2-vt1.3 (9/12/21) |
| Windows: | BlueJ-windows-502-vt13.zip |
| Mac OS: | BlueJ-mac-502-vt13.zip |
| All other OSes: | BlueJ-generic-502-vt13.jar |
You must use the links above to download BlueJ--the downloads from bluej.org do not include the support libraries used in our assignments and will give compiler errors you are unable to fix.
To install BlueJ, download the zip file for your operating system from the links above and unzip it. The Windows and Mac versions of the application include a Java environment built-in and no separate Java installation is required.
Windows users can move the application (or application folder) to their preferred location, and optionally add it to their start menu.
Mac OS users can move the application (or application folder) to their Applications folder, if desired.
For users of the "generic" (non-OS-specific) version, you must have JDK 11+ installed. Follow the BlueJ generic instructions to complete the install for your operating system.
Follow the same instructions to download and unzip the zip file. Just drag/drop or copy the new version on top of the old version to replace it.
Some Mac OS Users may see the following message when trying to open BlueJ for the first time (or, depending on your OS version, perhaps a different complaint about not being able to open or trust the application):
If you receive this message, open System Preferences, go to the Security & Privacy page, and look on the General tab. In the bottom half of the page under "Allow apps downloaded from:", make sure that "App Store and identified developers" is checked. If not, click the lock in the lower left to make changes and select "App Store and identified developers", then close System Preferences and try again.
If you still receive the same message when trying to open BlueJ, open System Preferences and go to the Security & Privacy page again. Look for a message about BlueJ at the bottom, asking if you want to open it anyway. Click to agree to open it anyway (may require you to unlock security preferences first), and that will fix the problem. See it in action in this video: https://youtu.be/0V5Phac8pao.
If you still aren't able to clear the problem, you can try this solution: https://youtu.be/6fqzb4qpgcs.