minicore-archetype
· Minicore is a JVM base cross-platform, high-performance, open-source framework for building modern, cloud-enabled, Internet-connected apps.
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 minicore-archetype-1.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.