UMLJ File - opening and understanding

Did your computer fail to open an UMLJ file? We explain what they are used for and recommend software that we know can open or otherwise handle your .UMLJ files.

What is an UMLJ file?

An .UMLJ file is a StarUML project file. StartUML project file. StarUML is a sophisticated software modeler aimed to support agile and concise modeling. It is used to create data-flow diagrams and entity-relationship diagrams. The UMLJ file contains project settings for a user-generated project.

How to open UMLJ files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension UMLJ for different purposes. We have identified 1 UMLJ opener for Windows that is compatible with this specific type of UMLJ file.

Programs that open these files

StarUMLStarUMLVerified
We have not yet verified any programs for Mac that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!
We have not yet verified any web services that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Suggest another file format using extension UMLJ

While we know of one file format using the .UMLJ file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .UMLJ file.