Apache Struts
· The goal of the Apache Struts project is to encourage application
architectures based on the "Model 2" approach, a variation of the classic
Model-View-Controller (MVC) design paradigm. Under Model 2, a servlet (or
equivalent) manages business logic execution, and presentation logic
resides mainly in server pages.
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 struts-parent-1.3.10.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.