KIE (Drools, jBPM, OptaPlanner) parent metadata
· The metadata parent contains all parent metadata (including plugins) except for dependency versions.
This is to avoid a chicken-and-egg problem with the boms.
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 kie-parent-metadata-6.5.0.Final.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.