Here, you will only find source code. If you just want to get and use the software, go to sourceforge, download it and enjoy easy diagram's drawing! https://sourceforge.net/projects/violet/
Violet is developped in Java and is packaged with Maven. So, prerequisites are :
- Java Development Kit 17 or greater (http://www.oracle.com/technetwork/java/javase/downloads/index.html)
- Maven 3 or greater (http://maven.apache.org/)
Once you grabbed the source code (git pull), just run 'mvn clean package' from the root directory. This command will compile and package everything.
As Violet project is composed of several sub-projects (plugins, products, etc...), it is organized as a main maven project (parent) with modules (children). Once everything is compiled and package, go to [module directory]/target to get the result of this packaging. For example : violetproduct-exe/target/violetumleditor-xxx.exe
If you want to go further and contribute (even for small fixes), please read the developed guide from the website here : http://alexdp.free.fr/violetumleditor/page.php?id=en:developerguide
Once you think you have something great, you can create a git pull request. I will examine your request and contact you back.
Kind Regards, Alex