Java BitTorrent library
· ttorrent is a pure-Java implementation of the BitTorrent protocol,
including support for several BEPs. It also provides a standalone client,
a tracker and a torrent manipulation utility.
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 ttorrent-1.5.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.