GInfuser
· A gosu implementation to map a domain class into a DTO *(data transfer object)*. This utilizes annotations to describe how the fields in the DTO must be populated.
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 ginfuser-1.1.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.