DEFS File Extension

The DEFS file extension was created by University of Kent and is also known as the BlueJ Settings File. DEFS is classified as a Developer Files and You can open and render the contents of this file in a Text Editor. You can open DEFS files in BlueJ program.

BlueJ Settings File Type

What is a DEFS File Type?

Changing the BlueJ configuration settings can be done in two ways.

Once you open a DEFS file it contains 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 modify the configuration.

What is a Default DEFS File Name?

Bluej.defs - The default file located in the BlueJ program.

Free Online DEFS Tools & Apps

Access powerful and secure free online DEFS tools to convert, view, edit, merge, split, and compare DEFS files — all without installing any software. Our tools support the .DEFS (BlueJ Settings File) file extension and run smoothly in any modern browser.

Select a tool below to explore features and manage your DEFS files directly from your device with ease.

DEFS Converter

Open DEFS

Edit DEFS

Compare DEFS Files

Merge DEFS Files

Split DEFS Files

DEFS Metadata Viewer

DEFS Files Common Issues

There are few common issues with the BlueJ Settings File .DEFS File Extensions while opening the .DEFS files on Windows and MacOs, we have solution to those issues such as:

Can't Open DEFS Files?

1. You must have supported software programs installed for BlueJ Settings File on your system such as BlueJ.
2. Associate default Bluej BlueJ program for *.defs (BlueJ Settings File) files.
   
   

   Associate DEFS Default Program on Windows

   1. Right-click a *.DEFS (e.g example.defs) file and click Open With.
   2. In the Open with dialog box, click Bluej BlueJ program Or click Browse to locate the program (*.exe) that you want.
   3. Select check box for Always use this app to open .defs files.
   
   

Related DEFS File Extensions

DEFS default file extension is .DEFS and other similer related extensions are:

All Platform Software Programs for DEFS File Extension

List of all softwares that can open the DEFS files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Open DEFS File on Windows

	Software	License	Developer
	BlueJ 3 for Windows	Open Source	BlueJ

Open DEFS File on Mac OS

Open DEFS file on Linux

Open DEFS file on Web

Open DEFS file on iOS

Open DEFS file on Android

About Licensing

1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
3. Free⁺ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

About DEFS - BlueJ Settings File