A set of annotations to use in conjunction with the Jackson JSON project
to cut down on the boiler plate needed to de/serializer JSON data into Java objects
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 autojackson-1.1.1.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.