What is the difference between Jdeps & Jdeprscan?
Your understanding in terms of what jdeprscan does is correct. The jdeprscan tool is precisely meant for
static analysis scanning a JAR file or some other aggregation of class files for uses of deprecated API elements.
It's also important to note that
The deprecated APIs identified by the
jdeprscantool are only those that are defined by Java SE. Deprecated APIs defined by third-party libraries aren’t reported.
Though, IMO you shall also understand that there is no comparison of the tool with jdeps, which on the other hand is not meant to identify deprecated APIs but instead analyze the dependencies of a class/package.
In short, they are exclusive in functionality.
Unlike jdeps, jdeprscan only exists as a command line tool, and does not provide any direct API.