OnFHIR Secure FHIR Repository
· onFHIR is an HL7 FHIR compliant secure, high-performance and scalable health data repository that can be used as the central data service for HL7 FHIR compliant healthcare 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 fhir-repository-3.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.