PNML Document Checker
· PNML Document Checker is a free tool to check
the conformance of your Petri Net Markup Language Documents with the ISO/IEC 15909-2 standard.
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 validation.releng-1.2.4.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.