Brooklyn Library Root
· Brooklyn Library project root, serving as the ancestor POM for all projects --
declaring versions, profiles, and the modules to build
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 brooklyn-library-1.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.