Java framework Root runtime module
· The voila-runtime library is a collection of custom open source classes
for the Voila framework for model-driven application development (MDD).
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window voila-runtime-root-1.9.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.