jnuit-archetype
· Create a full featured game project: lwjgl for rendering, jnuit for GUI, artemis for Entity System, guice for dependency injection, maven plugins for installer/package generators for Windows, Debian, Fedora and other OS, support of Keyboard/Mouse/Gamepad inputs settings...
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 jnuit-archetype-0.13.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.