There is only one file type that uses the .DEFS extension:
BlueJ Settings File
Configuration file created for BlueJ, a Java development environment; contains administrator settings for the BlueJ program such as the desired language and location of libraries.
There are two ways to change BlueJ configuration settings:
- To change user options, with the application open, select from the menu bar, then . You can alter settings in this dialog box.
- To change administrator options, open the file located at: BLUEJ_HOME/lib/bluej.defs. If on a Mac, right-click the BlueJ application, select , then , then , then . You should then see the bluej.defs file and other DEFS files.
Once you open a DEFS file, it will contain a list of properties in the following format: property-name = value
The property name should never be changed but the values can be changed to alter the configuration.
bluej.defs - The default settings file located in the BlueJ program.
Updated: April 22, 2013