CloudGraph
· CloudGraph(tm) is a suite of Service Data Object (SDO) 2.1 services designed for relational and big-table style "cloud" databases, such as HBase and others.
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 cloudgraph-2.0.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.