Google App Engine Profiler for Java - Parent
· A mini profiler for the Google App Engine Java runtime (inspired by the Python gae_mini_profiler at https://github.com/kamens/gae_mini_profiler and the MVC Mini Profiler at http://code.google.com/p/mvc-mini-profiler/)
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 gae-mini-profiler-parent-2.0.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.