Sakai Hierarchy
· Hierarchy is meant to provide a high performance basic hierarchy to associate data
with, no data is stored in the hierarchy itself, it is simply there to allow you
to maintain the hierarchical structure and to provide methods to manipulate it and
query it
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 hierarchy-23.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
