healthdata-link
· Samsung Health Stack is a tech stack packaged as an open-source project that provides end-to-end solutions for collecting and analyzing data from wearable devices in Android and Wear OS environments.
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 healthdata-link-1.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.