Parent
· The BioPAX Validator Project (including a general-purpose
object model validation and error reporting API core, OBO ontologies manager,
MIRIAM registry access (to resolve bio db names and identifiers), hundreds
BioPAX Level3 rules, settings, and the console and web applications)
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 parent-5.1.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.