aafactory-commons
· 'aafactory-commons' is a common library that combines or slightly modified existing open source libraries. It is intended to create test cases for open source libraries and to make them useful for future application development.
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 commons-1.2.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.