TrueUpdate
· A framework for keeping deployed Java enterprise applications up-to-date.
Note that this is commercial open source software covered by the
GNU Affero General Public License version 3 (AGPLv3) - see
http://www.gnu.org/licenses/agpl-3.0-standalone.html .
If you need a quote for using it with software which is not covered by
the AGPLv3, then please contact sales AT schlichtherle DOT de .
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 trueupdate-0.8.1.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.