RDoc produces HTML and command-line documentation for Ruby projects
· RDoc produces HTML and command-line documentation for Ruby projects. RDoc
includes the +rdoc+ and +ri+ tools for generating and displaying documentation
from the command-line.
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 rdoc-4.1.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.