TaskManager
· A library for multithreaded priority queueing, persisting (even between app launches), and executing of custom work. One can specify the priority of work, how many times it should be tried, how to handle failure, and much more.
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 taskmanager-0.0.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.