The Fractal JMX management framework
· Fractal is a modular and extensible component model that can be used with various programming languages to design, implement, deploy and reconfigure various systems and applications, from operating systems to middleware platforms and to graphical user interfaces.
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 fractal-jmx-tmpl-0.2.3.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.