Rubygems Servlets
· a servlet which can run a hosted rubygems repo, or caching proxy to remote repo, or just a proxy. finally you can have a merged repo of three types.
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 rubygems-0.2.3.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.